Is glut a word in the Scrabble Dictionary

Yes, glut is playable

...and is worth 8 points.

Found in the following dictionaries

Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)

"Glut" Definition

noun

An oversupply.
An excessive quantity .
The act or process of .
An excessively abundant supply of something:.

verb-intransitive

To eat or indulge in something excessively.

verb-transitive

To fill beyond capacity, especially with food; satiate.
To flood (a market) with an excess of goods so that supply exceeds demand.

verb

To fill especially with food to satiety.
To flood (the market) with goods so that supply exceeds demand.
To eat .
To swallow greedily.
Supply or fill to excess:.