A term used when an opponent is given the lead at a vital stage of the play and, with his subsequent lead, is forced to concede a trick or tricks and is therefore ‘endplayed’. The vital point is more likely to occur in the end stage of the play, hence the name.
For example:
South, on play in no-trumps, needs two of the last three tricks.
If he leads a diamond, West will win two tricks. Instead, he uses an ‘endplay’ by putting West on lead with the ♥Q. West is now ‘endplayed’, forced to lead diamonds, conceding the last two tricks.