/goh"euh hed'/ , n.
1. permission or a signal to proceed: They got the go-ahead on the construction work.
2. Chiefly Hawaii and California. a sandal held on the foot by a strap between the big toe and the next toe.
adj.
3. moving forward; advancing.
4. enterprising: a go-ahead Yankee peddler.
[ 1830-40, Amer.; n., adj. use of v. phrase go ahead ]