noun.
The act of making a guess; estimate or prediction; foresight
verb.
Present participle of guess.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
an estimate based on little or no information
Word Usage
"After what seemed like the longest gestation period ever known to man and over 24 hours of teasing her Twitter fans with a name guessing game involving the initial M it wasn't fun, just tedious, the twin's names have FINALLY been announced."