√LAB root. “lick, move the tongue”
This root for licking had precursors dating all the way back to the Qenya Lexicon of the 1910s, where it appeared as ᴱ√LAVA “lick” with derivatives like ᴱQ. lava- and G. lav- of the same meaning (QL/52; GL/53). In The Etymologies of the 1930s it became ᴹ√LAB “lick” (Ety/LAB), and √LAB continued to appear in Tolkien’s later writings with the glosses “lick” (PE17/72; PE22/151; PE19/92) or “lick, move the tongue” (VT39/15; WJ/416). It was thus quite stable in Tolkien’s mind.
References ✧ PE17/72, 159; PE19/92; PE22/151-152; VT39/15; WJ/416
ᴹ√LAB root. “lick”
References ✧ Ety/LAB, ÑGAL, STAK; PE19/45; PE22/102
ᴱ√LAVA root. “lick”
References ✧ LT2A/Eglamar; QL/52