Reconstruction:Proto-Celtic/knukkos

Etymology
Apparently cognate with 🇨🇬, of further origin, but both are traditionally derived from  or. It is sometimes suggested that the Germanic cognate is borrowed from Celtic (cf. especially 🇨🇬). Alternatively, Kroonen argues for an inherited basis of the geminate cluster in the Germanic term, and that consequently the Celtic is more likely borrowed from Germanic. Compare 🇨🇬.

Noun

 * 1) protuberance; hill

Reconstruction notes
Matasović's reconstruction *knokkos is probably erroneous for two reasons:
 * *-okk- generally yields -och in Welsh, like in from  and  from . Conversely, -ukk- leads to Welsh -wch, as in  from  and  from . Thus 🇨🇬 must indicate Proto-Celtic *knukkos, not *knokkos.
 * Early Irish genitive singular cnuicc must contain an original root vowel *u; it cannot have arisen from the raising of an original -o- since such raising generally did not occur across voiceless consonants in Old Irish.

Descendants

 * Goidelic:
 * Goidelic:
 * Goidelic:
 * Goidelic:
 * Goidelic:
 * Goidelic:
 * Goidelic: