Yes, grind is playable
...and is worth 9 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Grind" Definition
noun
A crunching or grinding noise.
A specific grade or degree of pulverization, as of coffee beans: drip grind.
Informal A laborious task, routine, or study: the daily grind.
Informal A student who works or studies excessively.
Slang An erotic rotation of the pelvis.
verb
To rotate the hips in an erotic manner.
To move with difficulty or friction especially so as to make a grating noise .
To become pulverized, polished, or sharpened by friction.
To perform the operation of .
verb-intransitive
Informal To devote oneself to study or work: grinding for a test; grinding away at housework.
Slang To rotate the pelvis erotically, as in the manner of a stripteaser.
To become crushed, pulverized, or powdered by friction.
To move with noisy friction; grate: a train grinding along rusty rails.
To perform the operation of grinding something.
verb-transitive
To bear down on harshly; crush.
To crush, pulverize, or reduce to powder by friction, especially by rubbing between two hard surfaces: grind wheat into flour.
To instill or teach by persistent repetition: ground the truth into their heads.
To operate by turning a crank: ground a hurdy-gurdy.
To oppress or weaken gradually: "Laws grind the poor, and rich men rule the law” ( Oliver Goldsmith).
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