origin of PC *yaˁr-/*taˁr- ‘knife, razor’ remains uncertain, although
the traditional derivation from
*ˁrw ‘to be naked,’ accepted in BDB 788‒789 and Aistleitner 1963:242, but rejected as “clearly not relevant” in HALOT 1770, is still attractive, especially if the term denoted specifically a shaving razor (Kogan 2015: 313)