backsaw ['bæksɔ:]
n.
(以金属在背部加厚的)短锯
backsaw[ noun ]
a handsaw that is stiffened by metal reinforcement along the upper edge
<noun.artifact>
Backsaw \Back"saw`\ (b[a^]k"s[add]`), n. [2d back, n. + saw.]
A saw (as a tenon saw) whose blade is stiffened by an added
metallic back.