Lucy definitions

lo͝o'sē
A feminine name: var. Lucille, Lucinda; equiv. It. & Sp. Lucia.
noun
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(died a.d. 303?); It. martyr: her day is Dec. 13
proper name
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The skeletal remains of a female hominin, Australopithecus afarensis, found in Ethiopia in 1974 and dated at about 3 million years old. Lucy is the most complete australopith skeleton yet discovered, being about 40 percent intact.
noun
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(archaic) The pike (a kind of fish).
noun
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A female given name.
pronoun
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A surname derived from place names in Normandy based on a male personal name, from Latin Lucius.
pronoun
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Origin of lucy

Medieval English vernacular form of Lucia, name of a Sicilian martyr, from the Latin feminine form of the Roman praenomen Lucius, from lux "light".