Simple misspelling of the word shit, sometimes done on purpose in a poor attempt to avoid censors on message boards and the like.
Wow funny shiy, this game sux.
by Raptor March 22, 2005
1 more definition
A mixture of shy and giraffe-dependent.
Penny looks proper shiy in her profile picture.
by Anonymous1s1s1s1s1s1 July 31, 2013