prize (n.1)

"reward," prise (c. 1300 in this sense), from Old French pris "price, value, worth; reward" (see price (n.)). As an adjective, "worthy of a prize," from 1803. The spelling with -z- is from late 16c. Prize-fighter is from 1703; prize-fight from 1730 (prize-fighter from 1785).

prize (n.2)

"something taken by force," mid-13c., prise "a taking, holding," from Old French prise "a taking, seizing, holding," noun use of fem. past participle of prendre "to take, seize," from Latin prendere, contraction of prehendere "lay hold of, grasp, seize, catch" (from prae- "before," see pre-, + -hendere, from PIE root *ghend- "to seize, take"). Especially of ships captured at sea (1510s). The spelling with -z- is from late 16c.

prize (v.)

"to estimate," 1580s, alteration of Middle English prisen "to prize, value" (late 14c.), from stem of Old French preisier "to praise" (see praise (v.)). Related: Prized; prizing.

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Definitions of prize from WordNet
prize (v.)
hold dear;
I prize these old photographs
Synonyms: value / treasure / appreciate
prize (v.)
to move or force, especially in an effort to get something open;
Synonyms: pry / prise / lever / jimmy
prize (v.)
regard highly; think much of;
We prize his creativity
Synonyms: respect / esteem / value / prise
prize (n.)
something given for victory or superiority in a contest or competition or for winning a lottery;
the prize was a free trip to Europe
Synonyms: award
prize (n.)
goods or money obtained illegally;
Synonyms: loot / booty / pillage / plunder / swag / dirty money
prize (n.)
something given as a token of victory;
Synonyms: trophy
prize (adj.)
of superior grade;
prize carnations
Synonyms: choice / prime / quality / select