The American Heritage® Dictionary of the English Language, 4th Edition
n. A disease of herbivores, especially sheep, caused by the presence of the larvae of the tapeworm Multiceps multiceps in the brain and resulting in a staggering gait. Also called sturdy.
the GNU version of the Collaborative International Dictionary of English
n. A disease of sheep, characterized by vertigo; the staggers. It is caused by the presence of the C�nurus, a larval tapeworm, in the brain. See c�nurus.
The Century Dictionary and Cyclopedia
n. Staggers in sheep, a disease caused by a cystic worm in the brain, formerly called Cœnurus cerebralis, now known to be the larva of the dog's tapeworm, Tœnia cœnurus. Also called giddiness and sturdy.
n. The jack-snipe.
Word Usage
"It is now pretty conclusively established that they are no more Japanese than they are of any other country in particular, but that the originators of the breed were common fancy mice which were suffering from a disease of the brain analogous to the 'gid' in sheep."