(n.) A valuing or rating by the mind, without actually measuring, weighing, or the like; rough or approximate calculation; as, an estimate of the cost of a building, or of the quantity of water in a pond.

(2):

(v. t.) To from an opinion of, as to amount,, number, etc., from imperfect data, comparison, or experience; to make an estimate of; to calculate roughly; to rate; as, to estimate the cost of a trip, the number of feet in a piece of land.

(3):

(v. t.) To judge and form an opinion of the value of, from imperfect data, - either the extrinsic (money), or intrinsic (moral), value; to fix the worth of roughly or in a general way; as, to estimate the value of goods or land; to estimate the worth or talents of a person.

Bibliography Information
Webster, Noah. Entry for 'Estimate'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/e/estimate.html. 1828.

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