sign sign (sīn) noun1. Something that suggests the presence or existence of a fact, condition, or quality. 2. a. An act or a gesture used to convey an idea, a desire, information, or a command: gave the go-ahead sign. b. Sign language.3. a. A displayed structure bearing lettering or symbols, used to identify or advertise a place of business: a motel with a flashing neon sign outside. b. A posted notice bearing a designation, direction, or command: an EXIT sign above a door; a traffic sign.4. A conventional figure or device that stands for a word, a phrase, or an operation; a symbol, as in mathematics or in musical notation. 5. plural sign An indicator, such as a dropping or footprint, of the trail of an animal: looking for deer sign. 6. A trace or vestige: no sign of life. 7. A portentous incident or event; a presage: took the eclipse as a sign from God. 8. A body manifestation that serves to indicate the presence of malfunction or disease. 9. One of the 12 divisions of the zodiac, each named for a constellation and represented by a symbol. verbsigned, signing, signsverb, transitive1. To affix one”s signature to. 2. To write (one”s signature). 3. To approve or ratify (a document) by affixing a signature, seal, or other mark: sign a bill into law. 4. To hire or engage by obtaining a signature on a contract: signed a rookie pitcher for next season; sign up actors for a tour. 5. To relinquish or transfer title to by signature: signed away all her claims to the estate. 6. To provide with a sign or signs: sign a new highway. 7. To communicate with a sign or by sign language: signed his approval; sign instructions to a hearing-impaired teammate. 8. To consecrate with the sign of the cross. verb, intransitive1. To make a sign or signs; signal. 2. To use sign language. 3. To write one”s signature. phrasal verb.sign inTo record the arrival of (another or oneself) by signing a register. sign off1. To announce the end of a communication; conclude. 2. To stop transmission after identifying the broadcasting station. 3. Informal. To express approval formally or conclusively: got the Congress to sign off on the tax proposal. sign on1. Informal. To enlist oneself, especially as an employee: “Retired politicians often sign on with top-dollar law firms” (New York Times). 2. To start transmission with an identification of the broadcasting station. sign outTo record the departure of (another or oneself) by signing a register. sign upTo agree to be a participant or recipient by signing one”s name; enlist: signed up for military service; signing up for a pottery course.
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signsign(n) symbol, emblem, mark, insignia, logo, badge signal, indication, symptom, warning, clue, hint notice, poster, road sign, placard, billboard, hoarding trace, track, trail, footprint, mark, scent omen, warning, portent, premonition, indication, prediction sign(v) autograph, sign your name, initial, authorize, endorse make signs, signal, gesture, motion, indicate, gesticulate employ, contract, hire, engage, take on, retain, sign upantonym: dismiss