Definition of stim Stim
We found 2 definitions of stim from 1 different sources.
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What does stim mean?
Wiktionary 
- stim (Noun)
Any of various repetitive actions, such as flapping the hands, wiggling the knees, shining a light into one's eye, and spinning in a chair, typically performed by autistic people. - stim (Verb)
To perform such an action.
