1. buccula — de Vaan
buccula 'cheek; cheek-piece (of a helmet); side-part of a machine' (Liv.+). Pit. *bukka-7 The meaning 'mouth' is secondary, and was originally used in a derogatory way. EM suspect Celtic origin, because it resembles beccus 'beak' (Suet.+), and because PN such as Buccus, Bucco, Buccio are Celtic names. Similarly Porzio Gemia 1981. Sihler (1995: 224) acknowledges two categories of words in which geminates are often … — [de Vaan, s.v. buccula, p. 90]