| 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 screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
The repetition of the beginning sounds of words, as in “Peter Piper picked a peck of pickled peppers,” “long-lived,” “short shrift,” and “the fickle finger of fate.”