Is scrabble a word in the Scrabble Dictionary

Yes, scrabble is playable

...and is worth 18 points.

Found in the following dictionaries

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

"Scrabble" Definition

noun

A scribble; a doodle.
The act or an instance of scrabbling.
A repeated or clawing.
An act of scratching or scrambling for something:.
A game in which players build up words on a board from small lettered squares or tiles.

verb-intransitive

To climb with scrambling, disorderly haste; clamber.
To make hasty, disordered markings; scribble.
To scrape or grope about frenetically with the hands.
To struggle by or as if by scraping or groping.

verb-transitive

To make or obtain by scraping together hastily.
To scribble on or over.

verb

To , claw, or grope about clumsily or frantically.
To struggle by or as if by or.