A type of vacuum pump that is used to achieve rough vacuum from initial atmospheric pressure.

plural of roughing pump

plural of roughing mill

A metal disc charged with wet emery, etc., for grinding gems.

plural of roughing fluid

Angry words, harsh criticism.

Third-person singular simple present indicative form of rough up the bullpen

present participle of rough up the bullpen

In a rough manner; without kindness, softness, or gentleness. / Unevenly or irregularly. / Without precision or exactness; imprecisely but close to in quantity or amount; approximately.

(transitive) To make rough. / (intransitive) To become rough.