Top Definition
To examine a diamond, usually a diamond ring worn by a woman who has just received it as a gift from her boyfriend/fiancee/husband.

Derived from the examination of a stone by a jeweler using a jeweler's loupe, which he holds up to his eye and which is shaped like a very short pipe.
Sue: Hey, we got engaged last night!
TIna: Oh, wow! Did he give you a ring?
Sue: Yeah, pipe the rock!
by Lebendy-leben January 29, 2010
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