annexe

English Thesaurus

1. an addition that extends a main building (noun.artifact)

hypernym	:	add-on, addition, improver,
definition	:	a component that is added to something to improve it (noun.artifact)

hyponym	:	ell,
definition	:	an extension at the end and at right angles to the main building (noun.artifact)

part meronym	:	building, edifice,
definition	:	a structure that has a roof and walls and stands more or less permanently in one place (noun.artifact)

derivation	:	annex,
definition	:	attach to (verb.contact)

derivation	:	annex,
definition	:	attach to (verb.contact)