[f. CANT v.2 + DOG.]
north. dial. A hand-spike with a hook (Halliwell); in U.S. = CANT-HOOK 2.
1868. Harpers Mag., XXXVI. 420. Six large logs were piled on to one large sled in a moments time, two or three men assisting with their cant-dogs.
1885. Boston (Mass.) Jrnl. Cant-dogs are coming into use for various purposes.