ˈstəmpə(r) noun
( -s )
: one that stumps: as
a. : one that removes tree stumps
b. : wicketkeeper
c. : a perplexing or difficult question : poser
a real question … a stumper — Benjamin DeMott
d. : stump speaker
the most indefatigable campaigner and best … stumper — Hodding Carter
e. : one that adjusts the mandrel on a tube-welding machine
f. : an operator of a felting machine