lens.

Unknown, likely a borrowing from an unidentified source. Compare Old High German linsa (“lentil”), Lithuanian lęšis (“lentil”), Proto-Slavic *lęťa (“lentil”), and Albanian lend (“acorn”), sounding too similar for a coincidence, however different enough to prohibit reconstruction of a common PIE protoform. May also be related to Ancient Greek λάθυρος (láthuros). If ultimately a non-IE substrate loanword, locating the source is virtually impossible because cultivation of lentil was widespread in the region since the Neolithic.

Unknown. According to De Vaan, perhaps a deformed form of what is found as Proto-Slavic *gňìda (“nit”), Proto-Germanic *hnits (“nit”), Ancient Greek κονίς (konís) (gen. κονίδος (konídos)), Armenian անիծ (anic, “nit”); he proposes Proto-Indo-European *dḱ(o)nid- > *dkni-n-d- > *dklind- > Proto-Italic *(d)lind-. However, like the Indo-European cognates, it may be of substrate origin.