n. & v.
n. 1 an approximate judgement, esp. of cost, value, size, etc. 2 a price specified as that likely to be charged for work to be undertaken.
v.tr. (also absol.) 1 form an estimate or opinion of. 2 (foll. by that + clause) make a rough calculation. 3 (often foll. by at) form an estimate; adjudge. 4 fix (a price etc.) by estimate. estimative adj. estimator n.
[ L aestimare aestimat- fix the price of ]