Yes, fold 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)
"Fold" Definition
noun
A coil or bend, as of rope.
A fenced enclosure for domestic animals, especially sheep.
A group of people or institutions bound together by common beliefs and aims: "He is a living testament to the wisdom of admitting lay psychoanalysts into the official fold” ( Jerome Bruner).
A line or mark made by folding; a crease: tore the paper carefully along the fold.
verb-intransitive
Games To withdraw from a game in defeat.
Informal To close, especially for lack of financial success; fail.
Informal To give in; buckle: a team that never folded under pressure.
Informal To weaken or collapse from exertion.
To be capable of being folded: a bed that folds for easy storage.
verb-transitive
Geology To form bends in (a stratum of rock).
Informal To discontinue operating; close: They had to fold the company a year after they started it.
To bend over or double up so that one part lies on another part: fold a sheet of paper.
To blend (a light ingredient) into a heavier mixture with a series of gentle turns: folded the beaten egg whites into the batter.
To bring from a compact to an extended position; unfold: folded the ironing board down from the wall; folded out the map to see where we were.
verb
To pen up or confine (as sheep) in a fold.
To lay one part over another part of .
To reduce the length or bulk of by doubling over .
To clasp or enwrap closely .
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