a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
a chattering or flighty, light-headed person.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
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.
mid-13c., from O.Fr. ha, las (later Fr. hélas), from ha "ah" + las "unfortunate," originally "tired, weary," from L. lassus "weary" (see late). Originally an expression of weariness rather than woe.