(ʌnˈsaɪnəs) n, pl-cini (-ˈsaɪnaɪ) (Zoology) zoology a small hooked structure, such as any of the hooked chaetae of certain polychaete worms[C19: from Late Latin: hook, from Latin uncus]
uncinus
uncinus
[ən′sī·nəs] (invertebrate zoology) In annelids, a minute, pectiniform neuroseta.