Antique tool for two lumbermen

• Lumberjack's tool
• Two-person cutter
• Two-person log cutter
• Tool for a pair of timber cutters
• A large two-handed saw formerly used to cut logs into planks
• Tool that it takes two to operate
• Log cutter for two

WordNet Word definitions in WordNet
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

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
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.