Yes, wind 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)
"Wind" Definition
noun
A movement of air coming from one of the four cardinal points of the compass: the four winds.
A movement of air generated artificially, as by bellows or a fan.
A single turn, twist, or curve.
A tendency; a trend: the winds of change.
Breath, especially normal or adequate breathing; respiration: had the wind knocked out of them.
idiom
Before the wind Nautical In the same direction as the wind.
Close to the wind Nautical As close as possible to the direction from which the wind is blowing.
In the wind Likely to occur; in the offing: Big changes are in the wind.
Near the wind Close to danger.
Near the wind Nautical Close to the wind.
verb-transitive
Music To blow (a wind instrument).
Music To sound by blowing.
To afford a recovery of breath: stopped to wind and water the horses.
To cause to be out of or short of breath.
To coil (thread, for example), as onto a spool or into a ball.
verb-intransitive
To be coiled or spiraled: The vine wound about the trellis.
To be twisted or whorled into curved forms.
To become wound: a clock that winds with difficulty.
To move in or have a curving or twisting course: a river winding through a valley.
To move in or have a spiral or circular course: a column of smoke winding into the sky.
phrasal-verb
Wind down Informal To diminish gradually in energy, intensity, or scope: The party wound down as guests began to leave.
Wind down Informal To relax; unwind.
Wind up Baseball To swing back the arm and raise the foot in preparation for pitching the ball.
Wind up Informal To arrive in a place or situation after or because of a course of action: took a long walk and wound up at the edge of town; overspent and wound up in debt.
Wind up To come or bring to a finish; end: when the meeting wound up; wind up a project.