Found in the following dictionaries
SOWPODS (Collins Scrabble Words)
"Taser" Definition
noun
A handheld device intended to immobilize another by delivering an electric shock; a stun gun.
Source: Wiktionary
verb
To shock an individual or animal with a handheld device with the electric shock that it delivers; to stun with a stun gun.
Source: Wiktionary
To strike verbally or gesturally with ill intents.
Source: Wiktionary