1) Certain sneaker 2) Half a pair of sneakers 3) Like a double-decker checker 4) One sneaker 5) Sheep tic 6) Sheep tick 7) Sheeptick 8) Simple sneaker 9) Vintage sneaker 
wingless fly that feeds on livestock
Synonym for Melophagus ovinus ... A wingless, flattened, hairy, leathery parasitic fly found in the wool of sheep and on goats; it is widespread in sheep, in which it sucks blood and causes much skin irritation. ... Synonym: ked. ... (05 Mar 2000) ... 
Louse fly of the family Hippoboscidae.
wingless fly that is an external parasite on sheep.
sheeptick.