any of several grasses of the genus Cynosurus, esp C. cristatus (crested dog's-tail), that are native to Europe and have flowers clustered in a dense narrow spike
dog's-tail in American English
(ˈdɔgzˌteɪl)
noun
any of a genus (Cynosurus) of perennial grasses, esp. the crested dog's-tail (C. cristatus) with a slender spike resembling that of timothy