Answer: outspan

AnswerCrossword Clue
OUTSPANPart of a bridge.
OUTSPANUnyoke, as oxen.
outspanto remove the yoke, harness, etc., from animals
outspanto unyoke or unhitch, as oxen from a wagon
outspanto unharness a draft animal
outspanthe act or a place of outspanning