What is a thick, heavy knife with a hooked point, used in pruning hedges, etc. When it has a short handle, it is sometimes called a hand bill; when the handle is long, a hedge bill or scimiter called?

billhook — A thick, heavy knife with a hooked point, used in pruning hedges, etc. When it has a short handle, it is sometimes called a hand bill; when the handle is long, a hedge bill or scimiter. (Webster's 1913.)