gaiter / gater / gator [ˈgɛitɜr]
gaiter – n. – a covering of cloth, leather, etc., for the ankle, or ankle and lower leg and often extending to the instep, worn over the shoe
gater – n. – spruer – one who attends to the sprue occupying the gate in the process of casting iron, other metals, plastics etc. (sprue: the hole through which metals or plastics are poured into the gate and thence into the mold)
gator – n. – North American informal alligator