Yes, low 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)
"Low" Definition
noun
A low level, position, or degree: Rain collects in the lows. The stock market fell to a new low.
Meteorology A region of atmospheric pressure that is below normal.
The characteristic sound uttered by cattle; a moo.
The low gear configuration of a transmission.
The deep sustained sound characteristic especially of a cow.
adverb
At a small price: bought low and sold high.
In or to a low condition or rank; humbly: thought low of himself.
In or to a low position, level, or space: aimed low; bent low.
In or to a reduced, humbled, or degraded condition: brought low by failure.
Softly; quietly: speak low.
adjective
Being near total depletion: My savings account is low.
Below an average or a standard: low wages; a low level of communication.
Below average in degree, intensity, or amount: a low temperature.
Biology Of relatively simple structure in the scale of living organisms.
Brought down or reduced in health or wealth: in a low state.
verb-intransitive
To utter the sound made by cattle; moo.
biographical name
Sir David Alexander Cecil 1891–1963 British cartoonist.
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