hobnail boot
/ˈhɑːbˌneɪl-/
noun
or
hobnailed boot
/ˈhɑːbˌneɪld-/
plural
hobnail boots
or
hobnailed boot
/ˈhɑːbˌneɪld-/
plural
hobnail boots
Britannica Dictionary definition of HOBNAIL BOOT
[count]
:
a heavy boot with short nails driven into the bottom to protect against wear