noun(used with a singular or plural verb)Chiefly BritishInformal.
the Women's Royal Naval Service: established in 1917 as an auxiliary to the Royal Navy.
Origin of Wrens
pronounced form of the initial letters, with placement of vowel suggested by wren
any of numerous small, active songbirds of the family Troglodytidae, especially Troglodytes troglodytes, of the Northern Hemisphere, having dark-brown plumage barred with black and a short, upright tail.Compare house wren, marsh wren, rock wren, winter wren.
any of various similar, unrelated birds, especially any of several Old World warblers.
Origin of wren
before 900;Middle Englishwrenn(e), Old Englishwrenna, obscurely akin to Old High Germanwrendilo,Old Norserindill
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
Word Origin for wren
Old English wrenna, werna; related to Old High German wrendo, rentilo, Old Norse rindill
historyinformal(in Britain and certain other nations) a member of the former Women's Royal Naval Service
Word Origin for Wren
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
Old English wrenna, metathesis variation of earlier werna, a West Germanic word of uncertain origin. Cf. Icelandic rindill, Old High German wrendo, wrendilo "wren." The bird's name in other languages usually denotes "royalty" (cf. Latin regulus), in reference to its golden crest.