ONlwSG

ceapaire m. [ˈkʲʰɛʰpəɾʲə], gen. idem, in the sense ‘bread and kitchen [i.e. anything eaten with bread]’, now also ‘sandwich’, 

See, for example, AFB^˄ and Faclan bhon t-Sluagh^˄.

is derived by Mackay (1897, 94: ceapair [with apocope]) from Ice. keper (leg. keppr) ‘cudgel, club; sausage (from the shape)’ (Cleasby 1874); on semantic grounds, McDonald (2009, 371) considers the loan unlikely. MacBain (1911) notes, however, that ceapaire goes back to SG ceap ‘a block’, s.v.; for the suffix -aire, see Thurneysen 1975, 172, §269 (a). Cf. Ir. ceapaire ‘shaped, moulded object; shapely person or thing; buttered slice of bread; sandwich’ (Ó Dónaill 1977).