Is spawn a word in the Scrabble Dictionary

Yes, spawn is playable

...and is worth 12 points.

Found in the following dictionaries

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

"Spawn" Definition

noun

A person who is the issue of a parent or family.
A product or an outcome.
Mycelia of mushrooms or other fungi grown in specially prepared organic matter for planting in beds.
Offspring occurring in numbers; brood.
The eggs of aquatic animals such as bivalve mollusks, fishes, and amphibians.

verb-transitive

To cause to spawn; bring forth; produce: a family that had spawned a monster.
To give rise to; engender: tyranny that spawned revolt.
To plant with mycelia grown in specially prepared organic matter.
To produce in large numbers.
To produce or deposit (spawn).

verb-intransitive

To deposit eggs; produce spawn.
To produce offspring in large numbers.

verb

To deposit or fertilize spawn.
To produce young especially in large numbers.
To produce or deposit (eggs) .
To induce (fish) to spawn.
To plant with mushroom spawn.