to roughly calculate or guess (based on incomplete information) a value, quantity, or extent of something
I could not preach but to the educated; to those who were capable of estimating my composition.
I knew she was very fond of you; but yet I was afraid of her not estimating your worth to her brother quite as it deserved, and of her regretting that he had not rather fixed on some woman of distinction or fortune.
There are no more uses of "estimate" identified with this meaning, but check unspecified meaning below.
He might not have sense enough himself to estimate your kindness, but I may venture to say that it had honour from all the rest of the party.
It would not be fair to inquire into a young lady's exact estimate of her own perfections.
You should come to London to know how to estimate your conquest.
He certainly wished her to go willingly, but he as certainly wished her to be heartily sick of home before her visit ended; and that a little abstinence from the elegancies and luxuries of Mansfield Park would bring her mind into a sober state, and incline her to a juster estimate of the value of that home of greater permanence, and equal comfort, of which she had the offer.
…still lived together; for Mary, though perfectly resolved against ever attaching herself to a younger brother again, was long in finding among the dashing representatives, or idle heir-apparents, who were at the command of her beauty, and her 20,000, any one who could satisfy the better taste she had acquired at Mansfield, whose character and manners could authorise a hope of the domestic happiness she had there learned to estimate, or put Edmund Bertram sufficiently out of her head.