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Something that suggests the presence or existence of a fact, condition, or quality.
(noun)
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An act or gesture used to convey an idea, a desire, information, or a command: gave the go-ahead sign.
(noun)
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Sign language.
(noun)
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A displayed structure bearing lettering or symbols, used to identify or advertise a place of business: a motel with a flashing neon sign outside.
(noun)
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A posted notice bearing a designation, direction, or command: an EXIT sign above a door; a traffic sign.
(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.