The noun guess has 2 senses (first 2 from tagged texts)
1. (2) guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis -- (a message expressing an opinion based on incomplete evidence)
2. (1) guess, guesswork, guessing, shot, dead reckoning -- (an estimate based on little or no information)
Overview of verb guess
The verb guess has 4 senses (first 4 from tagged texts)
1. (42) think, opine, suppose, imagine, reckon, guess -- (expect, believe, or suppose; "I imagine she earned a lot of money with her new novel"; "I thought to find her in a bad state"; "he didn't think to find her in the kitchen"; "I guess she is angry at me for standing her up")
2. (10) guess, venture, pretend, hazard -- (put forward, of a guess, in spite of possible refutation; "I am guessing that the price of real estate will rise again"; "I cannot pretend to say that you are wrong")
3. (6) estimate, gauge, approximate, guess, judge -- (judge tentatively or form an estimate of (quantities or time); "I estimate this chicken to weigh three pounds")
4. (6) guess, infer -- (guess correctly; solve by guessing; "He guessed the right number of beans in the jar and won the prize")