A wren is a very small brown bird. There are several kinds of wren.
wren in British English
(rɛn)
noun
1.
any small brown passerine songbird of the chiefly American family Troglodytidae, esp Troglodytes troglodytes (wren in Britain, winter wren in the US and Canada). They have a slender bill and feed on insects
2.
any of various similar birds of the families Muscicapidae (Australian warblers), Xenicidae (New Zealand wrens), etc
Word origin
Old English wrenna, werna; related to Old High German wrendo, rentilo, Old Norse rindill
Wren in British English1
(rɛn)
noun
history informal
(in Britain and certain other nations) a member of the former Women's Royal Naval Service
Word origin
C20: from the abbreviation WRNS
Wren in British English2
(rɛn)
noun
Sir Christopher. 1632–1723, English architect. He designed St Paul's Cathedral and over 50 other London churches after the Great Fire as well as many secular buildings
Wren in American English1
(rɛn)
noun
Informal
a member of the (British) Women's Royal Naval Service
Wren in American English2
(rɛn)
Sir Christopher1632-1723; Eng. architect
wren in American English
(rɛn)
noun
1.
any of a large family (Troglodytidae) of small, insect-eating passerine birds havinga long bill, rounded wings, and a stubby, erect tail; esp., the house wren (Troglodytes aedon), that often nests in birdhouses in North America
2.
any of certain other passerine birds of various families
Word origin
ME wrenne < OE wrenna, prob. akin to OHG rentilo, ON rindill
a wren , Xenicus longipes , occurring in New Zealand : family Xenicidae
emu-wren
any Australian wren of the genus Stipiturus, having long plumy tail feathers
heath wren
either of two ground-nesting warblers of southern Australia , Hylacola pyrrhopygia or H. cauta , noted for their song and their powers of mimicry
winter wren
any small brown passerine songbird of the chiefly American family Troglodytidae, esp Troglodytes troglodytes ( wren in Britain, winter wren in the US and Canada ). They have a slender bill and feed on insects
superb blue wren
a small Australian bird, Malurus cyaneus , the adult male of which has bright blue plumage