Reconstruction:Proto-Celtic/kīkos

Etymology
Assumed to be of expressive/ origin, common for female body parts (cf. unrelated, ).

The masculine gender of the Brythonic forms and potential evidence of the Old Irish daughter form being a neuter s-stem leads Matasović (2009) to propose possibly reconstructing the Proto-Celtic form as an s-stem neuter.

Noun

 * 1) breast