n. An eager birdwatcher who is willing to travel long distances to see rare species.
the GNU version of the Collaborative International Dictionary of English
n. One who, or that which, twitches.
The Century Dictionary and Cyclopedia
n. One who or that which twitches.
n. plural Small pincers.
n. An instrument used for clinching hog-rings.
Word Usage
"In the same way that a sprinter is an athlete, but an athlete is not necessarily a sprinter, a twitcher is a birdwatcher, but a birdwatcher is not necessarily a twitcher."