Mirriam Webster definition of "ESTIMATE":
tr.v.
1. To calculate approximately (the amount, extent, magnitude, position, or value of something).
2. To form an opinion about.
n.
1. The act of evaluating or appraising.
2. A tentative evaluation or rough calculation, as of worth, quantity, or size.
3. A statement of the approximate cost of work to be done, such as a building project, or car repair.
4. A judgement based on one's impressions; an opinion
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