But Tuor's heart was kindled with the fire of battle, and he would not flee, but boy as he was he wielded the axe as his father before him, and for long he stood his ground and slew many that assailed him; but at the last be was overwhelmed and taken captive and led before Lorgan the Easterling.

(UT, OF TUOR AND HIS COMING TO GONDOLIN)

Other heirlooms there were beside: the Ring of Barahir; the great Axe of Tuor, father of Earendil; and the Bow of Bregor of the House of Beor. Only the Ring of Barahir father of Beren One-hand survived the Downfall;..
...
Of "the great Axe of Tuor" there is no mention in The Silmarillion, but it is named and described in the original "Fall of Gondolin" (1916-17, see p. iv), where it is said that in Gondolin Tuor carried an axe rather than a sword, and that he named it in the speech of the people of Gondolin Dramborleg. In a list of names accompanying the tale Dramborleg is translated "Thudder-Sharp": "the axe of Tuor that smote both a heavy dint as of a club and cleft as a sword."

(UT, DESCRIPTION OF THE ISLAND OF NÚMENOR, Note 2)