- sign [sīn]n.[ME signe < OFr < L signum, a mark, token, prob. < base of secare, to cut (see SAW1): orig. sense prob. “incised mark”]1. something that indicates a fact, quality, etc.; indication; token [black as a sign of mourning]2.a) a gesture or motion that conveys information, gives a command, etc. [a nod as a sign of approval]b) any of the gestures used in sign languagec) SIGN LANGUAGE (sense 2)3. a mark or symbol having an accepted and specific meaning, as the sign ¢ for cent(s)4. any linguistic unit, as a word, letter, etc., that is the symbol of an idea, function, etc.5. a publicly displayed board, placard, etc. bearing information, advertising, a warning, etc.☆ 6. anything marking the trail of an animal, as footprints7. any visible trace or indication [the signs of spring]8.a) an act or happening regarded as a manifestation of divine will or powerb) an omen; portent9. SIGN OF THE ZODIAC10. Med. an objective indication or symptom of a diseasevt.1. to mark with a sign, esp. with the sign of the cross, as in blessing2. to write one's name on, as in acknowledging authorship, authorizing action, etc.3. to write (one's name) as a signature4. to engage by written contract; sign on5. Now Rare to indicate or express by a sign; signal6. to communicate (thoughts, ideas, etc.) by using the sign language of the deafvi.1. to write one's signature, as in attesting or confirming something2. to make a sign; signal; also, specif., to use the sign language of the deaf——————sign away or sign overto abandon or transfer title to (something) by or as by signing a document; convey——————sign in (or out)to sign a register on arrival (or departure)——————sign off1. to announce the end of broadcasting, as for the day, and stop transmitting2. Slang to stop talking3. SIGN OFF ON (see phrase below)——————sign off onto approve (a plan, statement, etc.) [the mayor signed off on the budget figures]——————sign onto engage (oneself or others) for employment; hire or be hired, esp. by a signed agreement——————sign up1. SIGN ON2. to enlist, enroll, etc.——————under the Sign of [also s-]Astrol. during that portion of the year when the sun is passing through and thus subject to the influence of (a specified sign of the zodiac) [born under the Sign of Leo]signern.
English World dictionary. V. Neufeldt. 2014.