artillery wheel

from The Collaborative International Dictionary of English v.0.48
Artillery wheel \Ar*til"ler*y wheel\
   A kind of heavily built dished wheel with a long axle box,
   used on gun carriages, usually having 14 spokes and 7
   felloes; hence, a wheel of similar construction for use on
   automobiles, etc.
   [Webster 1913 Suppl.]
    

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