Definitions
1.NounA rough calculation or assessment of the value, size, or cost of something.
2.NounA document (or verbal notification) specifying how much a job is likely to cost.
3.NounAn upper limitation on some positive quantity.
4.VerbTo calculate roughly, often from imperfect data.
5.VerbTo judge and form an opinion of the value of, from imperfect data.
6.Adjectiveestimated