Keen

(redirected from as keen as mustard)
Also found in: Dictionary, Thesaurus.

Keen

(kēn),
William W., U.S. surgeon, 1837-1932. See: Keen operation.
References in periodicals archive ?
BIRMINGHAM'S entrepreneurs are still as keen as mustard to prove their business potential, an industry dinner was told.
``Lee Woodyatt and Ryan Sugden are as keen as mustard to get into the action, so that gives me options,'' said Wright.
"I've been riding out at Ballydoyle all week but I'm used to having eight rides a day, so I'm as keen as mustard to get out there.