noun
plural -mates
[count] :a guess that you make based on the information you have about the size, amount, etc., of something
[count] :a statement about how much a job will cost
an opinion or judgment about how good or bad something is [singular]
verb
-mates; -mated; -mating
[+ obj] :to give or form a general idea about the value, size, or cost of (something) :to make an estimate of (something)