Fruit
Middle English: from Old French, from Latin fructus ‘enjoyment of produce, harvest’, from frui ‘enjoy’, related to fruges ‘fruits of the earth’, plural (and most common form) of frux, frug- ‘fruit’.
wiktionary
From Middle English frute, fruit, fruct, fruyt, frut(“fruits and vegetables”), from Old French fruit(“produce, fruits and vegetables”), from Latin fructus(“enjoyment, proceeds, profits, produce, income”) and frūx(“crop, produce, fruit”) (compare Latin fruor(“have the benefit of, to use, to enjoy”)), from Proto-Indo-European *bʰruHg-(“to make use of, to have enjoyment of”). Cognate with English brook(“to bear, tolerate”) and German brauchen(“to need”). Displaced native Middle English ovet("fruit", from Old English ofett; see English ovest, German Obst), Middle English wastom, wastum("fruit, growth", from Old English wæstm), and Middle English blede("fruit, flower, offspring", from Old English blēd; see English blead).
etymonline
fruit (n.)
late 12c., "any vegetable product useful to humans or animals," from Old French fruit "fruit, fruit eaten as dessert; harvest; virtuous action" (12c.), from Latin fructus "an enjoyment, delight, satisfaction; proceeds, produce, fruit, crops," from frug-, stem of frui "to use, enjoy," from suffixed form of PIE root *bhrug- "to enjoy," with derivatives referring to agricultural products. The Latin word also is the source of Spanish fruto, Italian frutto, German Frucht, Swedish frukt-.
Originally in English meaning all products of the soil (vegetables, nuts, grain, acorns); modern narrower sense is from early 13c. Also "income from agricultural produce, revenue or profits from the soil" (mid-14c.), hence, "profit," the classical sense preserved in fruits of (one's) labor.
Meaning "offspring, progeny, child" is from mid-13c.; that of "any consequence, outcome, or result" is from late 14c. Meaning "odd person, eccentric" is from 1910; that of "male homosexual" is from 1935, underworld slang. The term also is noted in 1931 as tramp slang for "a girl or woman willing to oblige," probably from the fact of being "easy picking." Fruit salad is attested from 1861; fruit-cocktail from 1900; fruit-bat by 1869.
