Yes, wash 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)
"Wash" Definition
noun
A cosmetic or medicinal liquid, such as a mouthwash.
A deposit of recently eroded debris.
A light tint or hue: "a wash of red sunset” ( Thomas Pynchon).
A preparation or product used in washing or coating.
A quantity of articles washed or intended for washing: The wash is on the back porch.
adjective
Being such that washing is possible; washable.
Involving essentially simultaneous purchase and sale of the same security.
verb-transitive
Chemistry To pass a solvent, such as distilled water, through (a precipitate).
Chemistry To purify (a gas) by passing through or over a liquid, as to remove soluble matter.
To carry, erode, remove, or destroy by the action of moving water: Heavy rains washed the topsoil away.
To cause to undergo a swirling action: washed the tea around in the cup.
To cover or coat with a watery layer of paint or other coloring substance.
idiom
Come out in the wash Slang To be revealed eventually: The real reasons for her resignation will come out in the wash.
verb-intransitive
Informal To hold up under examination; be convincing: "That [proclamation], of course, will not wash” ( John Hughes).
To be carried away, removed, or drawn by the action of water.
To cleanse something in or by means of water or other liquid.
To flow, sweep, or beat with a characteristic lapping sound: Waves washed over the pilings.
To undergo washing without fading or other damage: This fabric will wash.
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