What is "pitsaw"

pitsaw \pit"saw\ n. A large two-handed saw formerly used to cut logs into planks; one man stood above the log and the other in a pit below.

n. A saw worked by two people, one standing on the log and the other beneath it, often in a pit.

n. a large two-handed saw formerly used to cut logs into planks; one man stood above the log and the other in a pit below