| 单词 | sign |
| 释义 | sign —signless, adj. —signlike, adj. /suyn/, n. 1. a token; indication. 2. any object, action, event, pattern, etc., that conveys a meaning. 3. a conventional or arbitrary mark, figure, or symbol used as an abbreviation for the word or words it represents. 4. a motion or gesture used to express or convey an idea, command, decision, etc.: Her nod was a sign that it was time to leave. 5. a notice, bearing a name, direction, warning, or advertisement, that is displayed or posted for public view: a traffic sign; a store sign. 6. a trace; vestige: There wasn't a sign of them. 7. an arbitrary or conventional symbol used in musical notation to indicate tonality, tempo, etc. 8. Med. the objective indications of a disease. 9. any meaningful gestural unit belonging to a sign language. 10. an omen; portent: a sign of approaching decadence. 11. See sign of the zodiac. 12. See sign language (def. 1). 13. Usually, signs. traces, as footprints, of a wild animal. 14. Math. a. a plus sign or minus sign used as a symbol for indicating addition or subtraction. b. a plus sign or minus sign used as a symbol for indicating the positive or negative value of a quantity, as an integer. c. See multiplication sign. d. See division sign. e. a symbol, as !, used to indicate a factorial operation. v.t. 15. to affix a signature to: to sign a letter. 16. to write as a signature: to sign one's name. 17. to engage by written agreement: to sign a new player. 18. to mark with a sign, esp. the sign of the cross. 19. to communicate by means of a sign; signal: He signed his wish to leave. 20. to convey (a message) in a sign language. 21. Obs. to direct or appoint by a sign. v.i. 22. to write one's signature, as a token of agreement, obligation, receipt, etc.: to sign for a package. 23. to make a sign or signal: He signed to her to go away. 24. to employ a sign language for communication. 25. to obligate oneself by signature: He signed with another team for the next season. 26. sign away or over, to assign or dispose of by affixing one's signature to a document: She signed over her fortune to the church. 27. sign in (or out) to record or authorize one's arrival (or departure) by signing a register. 28. sign off, a. to withdraw, as from some responsibility or connection. b. to cease radio or television broadcasting, esp. at the end of the day. c. Informal. to become silent: He had exhausted conversation topics and signed off. d. to indicate one's approval explicitly if not formally: The president is expected to sign off on the new agreement. 29. sign on, a. to employ; hire. b. to bind oneself to work, as by signing a contract: He signed on as a pitcher with a major-league team. c. to start radio or television broadcasting, esp. at the beginning of the day. d. Computers. log1 (def. 17a). 30. sign up, to enlist, as in an organization or group; to register or subscribe: to sign up for the navy; to sign up for class. [1175-1225; (n.) ME signe < OF < L signum mark, sign, ensign, signal, image; (v.) ME signen to mark with a sign, esp. the sign of the cross < OF signer < L signare to mark with a sign, inscribe, affix a seal to, deriv. of signum] Syn. 1. trace, hint, suggestion. 1, 4. signal. 10. indication, hint, augury. SIGN, OMEN, PORTENT name that which gives evidence of a future event. SIGN is a general word for whatever gives evidence of an event - past, present, or future: Dark clouds are a sign of rain or snow. An OMEN is an augury or warning of things to come; it is used only of the future, in general, as good or bad: birds of evil omen. PORTENT, limited, like OMEN, to prophecy of the future, may be used of a specific event, usually a misfortune: portents of war. |
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