Yes, stall is playable
...and is worth 7 points.
Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Stall" Definition
noun
A booth, cubicle, or stand used by a vendor, as at a market.
A compartment for one domestic animal in a barn or shed.
A condition in which an aircraft or airfoil experiences an interruption of airflow resulting in loss of lift and a tendency to drop.
A protective sheath for a finger or toe.
verb-transitive
To cause (a motor or motor vehicle) accidentally to stop running.
To cause (an aircraft) to go into a stall.
To employ delaying tactics against: stall off creditors.
To halt the motion or progress of; bring to a standstill.
To maintain in a stall for fattening: to stall cattle.
verb-intransitive
To come to a standstill: Negotiations stalled.
To employ delaying tactics: stalling for time.
To live or be lodged in a stall. Used of an animal.
To lose forward flying speed, causing a stall. Used of an aircraft.
To stick fast in mud or snow.
verb
To put into or keep in a stall.
To bring to a standstill .
To cause (an engine) to stop usually inadvertently.
To cause (an aircraft or airfoil) to go into a stall.
To come to a standstill (as from mired wheels or engine failure).
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