TWITCHING
twitch, twitching, vellication
(noun) a sudden muscle spasm; especially one caused by a nervous condition
Source: WordNet® 3.1
Verb
twitching
present participle of twitch
Noun
twitching (countable and uncountable, plural twitchings)
The motion of something that twitches.
(birdwatching) Compulsive birdwatching by people (twitchers) who travel long distances to see rare species.
Adjective
twitching (comparative more twitching, superlative most twitching)
That twitches.
Source: Wiktionary
TWITCH
Twitch, v. t. [imp. & p. p. Twitched; p. pr. & vb. n. Twitching.]
Etym: [OE. twicchen, fr. (doubtful) AS. twiccian; akin to AS.
angeltwicca a worm used for bait, literally, a hook twitcher, LG.
twikken to tweak, G. zwicken. Cf. Tweak.]
Definition: To pull with a sudden jerk; to pluck with a short, quick
motion; to snatch; as, to twitch one by the sleeve; to twitch a thing
out of another's hand; to twitch off clusters of grapes.
Thrice they twitched the diamond in her ear. Pope.
Twitch, n.
1. The act of twitching; a pull with a jerk; a short, sudden, quick
pull; as, a twitch by the sleeve.
2. A short, spastic contraction of the fibers or muscles; a simple
muscular contraction; as, convulsive twitches; a twitch in the side.
3. (Far.)
Definition: A stick with a hole in one end through which passes a loop,
which can be drawn tightly over the upper lip or an ear of a horse.
By twisting the stick the compression is made sufficiently painful to
keep the animal quiet during a slight surgical operation. J. H.
Walsh.
Source: Webster’s Unabridged Dictionary 1913 Edition