an extraordinary or unusual thing, person, or event; an exceptional example or instance.
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.
mid-14c., "ample, sizeable," from O.Fr. substantiel (13c.), from L. substantialis "having substance or reality, material," from substantia (see substance). Meaning "existing, having real existence" is from late 14c.