cold chisel

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A chisel made of hardened tempered steel and used for cutting cold metal.

Century Dictionary and Cyclopedia

1. n. A chisel with a cutting edge formed of steel properly strengthened by tempering, for cutting metal which has not been softened by heating.

Wiktionary

1. n. a narrow chisel, made of hardened, tempered steel, used for cutting stone etc

GNU Webster's 1913

1. n. See under Cold, a.
2. adj. a chisel of peculiar strength and hardness, for cutting cold metal.

WordNet 3.0

1. n. narrow chisel made of steel; used to cut stone or bricks