tran·sept
noun/ˈtrænsept/
/ˈtrænsept/
(architecture)- either of the two wide parts of a church in the shape of a cross, that are built at right angles to the main central part
（十字形教堂的）耳堂 - the north/south transept of the cathedral
大教堂的北[南]耳堂。
Word Originmid 16th cent.: from modern Latin transeptum (see trans-, septum). - the north/south transept of the cathedral