— nippleless , adj.
/nip"euhl/ , n.
1. a protuberance of the mamma or breast where, in the female, the milk ducts discharge; teat.
2. something resembling it, as the mouthpiece of a nursing bottle or pacifier.
3. a short piece of pipe with threads on each end, used for joining valves.
[ 1520-30; earlier neble, nib ( b ) le, nepil; perh. akin to NIB; cf. Dan nip point; see -LE ]