gum•shoePronunciation: (gum'shOO"), [key]
—n., v., -shoed, -shoe•ing.
a shoe made of gum elastic or India rubber; rubber overshoe.
sneaker (def. 1).
to work as a detective.
to go softly, as if wearing rubber shoes; move or act snoopily or stealthily.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.