1) Mechanical hand tool 
A cant hook is a traditional logging tool consisting of a wooden lever handle with a movable metal hook called a dog at one end, used for handling and moving logs. Unlike the similar peavey, the cant hook has a blunt tip, often bearing teeth. A logging tool description from the Lumberman`s Museum at Patten, Maine, reads in part: `A cant dog or c.....
• A wooden lever with a movable iron hook. hear the end; -- used for canting or turning over heavy logs, etc.
Cant' hook` A wooden lever with a movable iron hook. hear the end; -- used for canting or turning over heavy logs, etc. [ U. S.] Bartlett. 
A cant hook is a wooden lever with a movable iron hook near the end used for canting or turning over heavy logs, etc, particularly in the USA.
[n] - a peavey having a hook instead of a spike
noun a peavey having a hook instead of a spike; used for handling logs