/boosht/ , adj.
1. overgrown with bushes.
2. Informal. exhausted; tired out: After all that exercise, I'm bushed.
3. Canadian Informal. mentally unbalanced as a result of prolonged residence in a sparsely inhabited region.
4. Australian and New Zealand Slang. unable to find one's direction; lost; confused.
[ 1485-95; BUSH 1 + -ED 2 , -ED 3 ]