prismatic compass

prismatic compass

noun
a hand compass equipped with sights and prisms to permit aiming the instrument at a point and at the same time reading the compass direction of the point.

Origin:
1850–55

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Prismatic compass is always a great word to know.
So is interrobang. Does it mean:
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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.
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