A verb for “to lick” based on the root √LAB of similar meaning (PE17/72; PE22/151-152; RGEO/59).
Conceptual Development: This verb dates all the way back to ᴱQ. lava- “lick” from the Qenya Lexicon of the 1910s where it was derived from the early root ᴱ√LAVA (QL/52). It retained this form in Early Qenya Word-lists of the 1920s (PE16/134), and in The Etymologies of the 1930s it appeared as ᴹQ. lavin “I lick” under the root ᴹ√LAB “lick” (Ety/LAB). The verb and root continued to appear regularly in Tolkien’s later writings.
#lav- (1) vb. "lick", pa.t. #lávë in undulávë, see undu (Nam); 1st person aorist lavin "I lick" in the Etymologies(LAB)