What is the X in X-mas?
Roman god of passionate love, late 14c., from Latin Cupido, personification of cupido "desire, love," from cupere "to desire" (see cupidity). Identified with Greek Eros. Cupid's bow as a shape, especially of lips, is from 1858.
Note: In art, Cupid is often depicted as a chubby, winged infant who shoots arrows at people to make them fall in love. He is also sometimes shown as blind or blindfolded.
A graphic query language.
["CUPID: A Graphic Oriented Facility for Support of Nonprogrammer Interactions with a Database", N. McDonald, PhD Thesis, CS Dept, UC Berkeley 1975].