1. (n.) The pivoted or swinging bar to which the traces, or tugs, of a harness are fastened, and by which a carriage, a plow, or other implement or vehicle, is drawn; a whiffletree; a swingletree; a singletree. See Singletree.

2. (n.) The cornel tree.

Easter sepulcher ambry apse baptistery blindstory chancel choir cloisters confessional confessionary cross bitt crossarm crossbar crosspiece crypt diaconicon diaconicum doubletree nave porch presbytery rood loft rood stair rood tower sacrarium sacristy singletree swingletree transom transversal transverse traverse triforium vestry whippletree