n. compulsive bird watching by people (twitchers) who travel long distances to see rare species
v. Present participle of twitch.
adj. That twitches.
The Century Dictionary and Cyclopedia
n. The act of one who or that which twitches; especially, an involuntary convulsive jerking of the muscles, etc. See twitch, n., 2.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a sudden muscle spasm; especially one caused by a nervous condition
Word Usage
"We can’t see them, except for a bit of net curtain twitching from the caravans, and the odd small cluster of garishly dressed ginger-headed teenagers who walk around us in circles, then stand out of earshot to make obvious mobile phone calls."