a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
c.1600, of persons, "immature, not experienced," from un- (1) "not" + pp. of fledge. Literal sense of "not yet covered in feathers" is recorded from 1610s.