(teratology) A congenital malformation of the upper lip, reminiscent of the mouth of a hare.

(transitive) To curse (as if by causing a harelip),

Stubborn; wilful. / Realistic; pragmatic.

(computing) A device used for storing large amounts of data for a computer that persist while the computer is turned off.

(countable, mostly in botany and forestry) The wood from any dicotyledonous tree, without regard to its hardness.

(of a floor) Made of interlocking hardwood boards.

(American football) The situation where the quarterback attempts to draw the defense offside through a deceptive snap count sequence, sometimes accompanied by subtle body movements which simulate the initiation of the play.

(US) An alcoholic beverage formed by fermenting cider (apple juice).

simple past tense and past participle of harden

Inured; toughened. / Unfeeling; pitiless; callous. / Firmly established or unlikely to change; inveterate. / (computing, military) Having extra defences against attack; highly fortified.