Quiz: Remember the definition of mal de mer?
early 14c., from Old French (h)able (14c.), from Latin habilem, habilis "easily handled, apt," verbal adjective from habere "to hold" (see habit). "Easy to be held," hence "fit for a purpose." The silent h- was dropped in English and resisted academic attempts to restore it 16c.-17c., but some derivatives acquired it (e.g. habiliment, habilitate), via French.
Able-whackets - A popular sea-game with cards, in which the loser is beaten over the palms of the hands with a handkerchief tightly twisted like a rope. Very popular with horny-fisted sailors. [Smyth, "Sailor's Word-Book," 1867]