The Collaborative International Dictionary of English v.0.48:
Lunula \Lu"nu*la\, n.; pl. Lunul[ae]. [L., prop., a little moon. See Lunule.] (Anat. & Zool.) Same as Lunule. [1913 Webster]WordNet (r) 3.0 (2006):
lunula n 1: the crescent-shaped area at the base of the human fingernail [syn: half-moon, lunula, lunule] 2: a crescent-shaped metal ornament of the Bronze Age