A saw small enough to be used by one hand.
A saw, with a blade that is put under tension, for cutting metal
To cut with a hacksaw.
‘This bolt is so rusted I'll have to hacksaw it off.’;
A saw used with one hand.
saw used with one hand for cutting metal
a saw used with one hand for cutting wood
A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal. The equivalent saw for cutting wood is usually called a bow saw.