ballast pocket
noun Railroads.
- a depression that is formed beneath the ballast layer by penetration of ballast particles into the subgrade and that tends to collect moisture.
Halcyon Active Control Ballast pocket
Etnies Ballast Pocket Crewneck Sweater – Grey Heather – SKATE
IST BALLAST POCKET – Jonas Dive
Life Raft for Coatal Use – Just Marine
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