a hollow cylinder with cutting teeth forming a rotary saw for trepanning
crown saw in American English
hole saw
crown saw in American English
noun
a rotary saw consisting of a hollow cylinder with teeth formed on one end or edge, as a trephine or trepanning saw
Also called: cylinder saw, hole saw
Word origin
[1860–65]This word is first recorded in the period 1860–65. Other words that entered Englishat around the same time include: Paleolithic, jumping jack, mutualism, raider, trade name