Key
As with most dreams, look for the obvious connections by comparing the details or the theme of your dream to your daily life. Are you trying to figure something out and "unlock" a puzzling question? Do you wish to hide something? Are you locking something up or are you opening the door? Last, but not least, does this dream have any sexual connotations?
Mystical Meaning - To dream of finding a key is a symbol of good fortune, and a bunch of keys indicates profitable business dealings.

Kidnapping
The main theme in abduction dreams is fear. The dreamer may be afraid of losing a very important part of himself or of losing his safest and most familiar surroundings. Also, the dreamer may be afraid of leaving his home, childhood, familiar support group, or long standing ideas. These type of dreams may be most prevalent during times of psychological or physical transition and during stressful times of life when the future is somewhat uncertain. Consider the details of your dream and try to isolate or identify the fear that created the dream. Superstition based dream interpretation books say that dreaming about being kidnapped is really an omen and that you will receive unexpected news and be successful against your opposition.

Killing
If you are killing someone in your dreams, you are probably expressing hostile feelings. Consider this an opportunity to look at your negative feelings and decide what would be the best and the least destructive way to address them. If you are a witness to a killing, you may be reflecting on changes going on around you that you don't particularly like.
Mystical Meaning - There will be arguments and you may have to make sacrifices, say the dream seers.

King
A king can symbolize the self that sits on the throne of consciousness. He represents the dominant ruling power, the part of you that is in control. The king can also represent your father.
Mystical Meaning - Carl Jung recognized alchemy as a system of symbolism representing the transformation of the lower self (base matter) and the divine (gold). The king is the human personification of the work. His appearance in dreams can have a number of important meanings: The king who is ill represents wornout attitudes and sometimes the conflict between the sonscious and unconscious. The decrepit king shows limited, ego-bound consciousness. If the king dissolves or returns to the mother, this shows the ego sinking back into unconsciousness. In the strange symbolism of alchemy, when a king gives birth to a hermaphrodite, it shows how the new, dominant self is born.

Kiss
In this dream you may be expressing feelings that are difficult to express during the day. Kissing is usually an indication of warmth, affection, and happiness. If you don't receive enough love and affection in your daily life, then this could be a compensatory dream, where the dreamer is comforting himself. If you are kissing the object of your affection, the dream could be a form of wish fulfillment. Superstition based interpretations say that if you are kissing strangers, you may have a need to conquer. If the kissing is insincere, you are pretentious while if you see your partner kissing someone else, you may be afraid of infidelity.
Mystical Meaning - The gypsies believe that to dream of exchanging a kiss means that a quarrel will be over soon.

Kitchen
Houses in dreams generally represent the dreamer (dreamer = house). The kitchen is the heart of the house. For most families, the kitchen is a place of warmth and nourishment (emotional as well as physical). Examine the conditions of your dream kitchen and you may become aware of some emotional needs and feelings toward yourself and others.
Mystical Meaning - If the kitchen is clean and tidy it is an auspicious dream that predicts harmony within the family.

Kite
The message that is coming up from your unconscious mind may be one of renewed freedom or an accomplishment of a goal. Kites are generally associated with sweet childhood memories and a sense of abandonment in joy. If your daily life is difficult, this dream may be a form of compensation, or it may be a positive anticipation of things to come.
Mystical Meaning - To dream of flying a kite denotes a great show of wealth, but if the kite crashes or the string breaks, expect financial troubles.

Knife
This tool does not have positive connotations. It may reflect the unrest and difficulty that you are experiencing. If you are self-mutilating, consider your actions and/or addictions. Take a hint from your unconscious and modify or discontinue your harmful thoughts or actions.
Mystical Meaning - They say that it is good luck to dream of a kitchen knife, but all other knives predict possible danger.

Knock
Your unconscious may be trying to attract your attention to something important you are unaware of at the moment.
Mystical Meaning - To dream of someone knocking on a door indicates that soon fortune will smile on you.

Knot
A knot may represent a problem that you're trying to untangle (a knotty problem). It can also represent the union of two people or the union of the male and female aspects of the psyche (i.e., tying the knot, a ritual that was an actual occurrence during Babylonian times, when threads from the couple's garments would be tied together).
Mystical Meaning - Superstition has associated knots with problems. For example, at weddings the bridegroom should wear one of his shoes unlaced, to foil witches from untying his bride's virginity. Moreover, in Scotland it is believed that a corpse should not be put into a coffin with knots on any of its clothing or the spirit will never rest in peace. In dream superstitions, to dream knots means that you will meet with much to cause you anxiety.