noun
A cutting tool with a toothed blade, used for woodworking and similar tasks. The cross-reference to のこぎり indicates it is a synonym or near-synonym, but ソー is a modern loanword often used in compound terms or specific contexts.
See also: のこぎり
電動ソーで木材を切る。
Cut the wood with an electric saw.
チェーンソーは危ないから気をつけて。
Be careful with the chainsaw because it's dangerous.