The meaning of Sheen (ش) in the Arabic language

ش

Unique characteristic: Tafash-shee (spreading sound)

Definition: to pronounce a letter with the filling of the mouth with air allowing the sound to spread greatly over the mouth.

Words that possess this letter (specifically the first radical) possess the meaning of spreading and/or diversity. Examples of such words include:

 شجرة  tree

شعر  hair

شيعة group or sect

شمس  sun

شرك  association of partners

Please watch this video which give further explanation of this concept.