(a) Chess To checkmate (the king), defeat (an opponent) by checkmating his king; also fig.; ~ cheker [see cheker 1. (c)]; (b) to overcome (sb.), overpower, defeat; make (sb. or sth.) powerless, render helpless, damage, destroy; ?kill; also, ppl. mated, exhausted, worn out; mated of his main (their strengthes), made powerless, deprived of his (their) strength; (c) to make (sb.) miserable or wretched, afflict; put (sb.) to shame; (d) to confound (sb.), confuse, baffle, bewilder.