gumboot
(ˈɡʌmˌbuːt) Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
gum•boot
(ˈgʌmˌbut)
n. a rubber boot usu. extending to the calf or knee.
[1840–50, Amer.]
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