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1. Having exceptionally keen eyesight. The man was so eagle-eyed that he could spot pennies on the ground from across the street.
2. Particularly perceptive, observant, or attentive to detail; perspicacious. A few eagle-eyed fans have noticed a detail in the film that may hint at a possible sequel.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
Keen-sighted, either literally or figuratively. Like all birds of prey, eagles of necessity have excellent eyesight, which they need to spot their food supply. Their perspicacity has been transferred to human beings since Roman times. Horace pointed out (Satires, 35 b.c.) that those who are eagle-eyed in spotting others’ faults are blind to their own. “Faith, being eagle-eyed, can . . . see the majestie of God,” wrote Bishop William Barlow in 1601. Later the term was often put as having an eagle eye.
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer