any of a class of organic compounds derived from urea by replacing one or more of its hydrogen atoms by organic groups
2.
any of a class of derivatives of urea and carboxylic acids, in which one or more of the hydrogen atoms have been replaced by acyl groups: includes the cyclic ureides, such as alloxan
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
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.
a stew of meat, vegetables, potatoes, etc.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.