A word for “lark” appearing in the manuscript draft of Laws and Customs among the Eldar from the late 1950s (MR/238), also mentioned in the tale Of Finwë and Míriel (MR/262), apparently a combination of the roots √LIR and √LIN having to do with singing.
Conceptual Development: In Laws and Customs among the Eldar this word was first written as Q. {aimenel >>} aimenal before being replaced by lirulin (MR/252 note #6). In documents from the 1910s and 20s, Tolkien gave ᴱQ. ambarin as the word for “lark” (PE13/110, 159).
lirulin noun "lark" (MR:238, 262), changed from aimenel, aimenal