Eagle
Middle English: from Old French aigle, from Latin aquila .
wiktionary
From Middle English egle, from Anglo-Norman egle, from Old French aigle, from Latin aquila. Displaced native Middle English ern, earn, arn, from Old English earn(“eagle”). More at erne.
etymonline
eagle (n.)
"very large diurnal raptorial bird of the genus Aquila," mid-14c., from Old French egle, from Old Provençal aigla, from Latin aquila "black eagle," fem. of aquilus "eagle," often explained as "the dark colored" (bird); see aquiline. The native term was erne.
Golf score sense is by 1908 (according to old golf sources, because it "soars higher" than a birdie). As the name of a U.S. $10 coin minted from 1792 to 1933, established in the 1786 resolution for a new monetary system (but at first only the desperately needed small copper coins were minted). The figurative eagle-eyed "sharp-sighted" (like an eagle) is attested from c. 1600.
