Yes, scratch is playable
...and is worth 15 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Scratch" Definition
noun
A contestant who has been withdrawn from a competition.
A mark resembling a line that is produced by scratching.
A sound made by scratching.
adjective
Assembled hastily or at random.
Done haphazardly or by chance.
Sports Having no golf handicap.
Made from scratch made with basic ingredients .
Made or done by chance and not as intended .
idiom
From scratch From the very beginning.
Scratch the surface To investigate or treat something superficially.
Up to scratch Informal In fit condition.
Up to scratch Informal Meeting the requirements.
verb-intransitive
Games To make a shot in billiards that results in a penalty, as when the cue ball falls into a pocket or jumps the cushion.
To gather funds or produce a living with difficulty.
To make a harsh scraping sound.
To rub or scrape the skin to relieve itching.
To use the nails or claws to dig, scrape, or wound.
verb-transitive
Slang To cancel (a project or program, for example).
To make a thin shallow cut or mark on (a surface) with a sharp instrument.
To rub or scrape (the skin) to relieve itching.
To scrape or strike on an abrasive surface.
To strike out or cancel (a word, for example) by or as if by drawing lines through.
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