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 screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
(often plural) a result or consequence, esp one that is somewhat removed from the action or event which precipitated it: the repercussions of the war are still keenly felt
2.
a recoil after impact; a rebound
3.
a reflection, esp of sound; echo or reverberation
4.
music the reappearance of a fugal subject and answer after an episode
[C16: from Latin repercussiō, from repercutere to strike back; see percussion]