Transept

[Sarah]

The transversal part of a church, which crosses at right anglesto the greatest length, and between the nave and choir. In thebasilicas, this had often no projection at its two ends. In Gothicchurches these project these project greatly, and should be calledthe arms of the transept. It is common, however, to speak of the armsthemselves as the transepts.

[Sommer]

either of the two side parts of a cross-shaped church that are at an angle of 90 degrees to the main part

[Couch Potatoe]

(in a cross-shaped church) either of the two parts forming the arms of the cross shape, projecting at right angles from the nave.