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
any of various similar birds of the families Muscicapidae (Australian warblers), Xenicidae (New Zealand wrens), etc
Old English wrenna, werna; related to Old High German wrendo, rentilo, Old Norse rindill
(history, informal) (in Britain and certain other nations) a member of the former Women's Royal Naval Service
C20: from the abbreviation WRNS
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
O.E. wrenna, metathesis variation of earlier werna, a W.Gmc. word of uncertain origin. Cf. Icel. rindill, O.H.G. wrendo, wrendilo "wren." The bird's name in other languages usually denotes "royalty" (cf. L. regulus), in reference to its golden crest.