Riprap

RIPRAP"Loose pieces of heavy stone or masonry used in some places to protect roadbeds from water erosion
RIP-TRACK"Minor repair track or car-repair department. RIP means repair
RIVET BUSTER"Boilermaker ...

Riprap rocks (a wall of stones thrown together without order) are a convenient and flexible way to discipline embankments. In our miniature world, a good source of riprap is found in the catbox. No, do not steal kitty's litter from her pan! ...

Riprap. Brickbats, stones, blocks or concrete or other protective covering material of like nature deposited upon river and stream beds and banks, lake tidal or other shores to prevent erosion and scour by water flow, wave or other movement.

Riprap - Large pieces of stone used to prevent washouts in roadbeds.
Rip-Track - An area of the maintenance yard where equipment is stored while waiting for repairs.

A waterway bed protection consisting of timber, concrete, riprap, paving or other construction placed adjacent to substructure abutments and piers to prevent undermining by scour. Also placed at the ends of pipes and culverts.

See also: Operation, Track, Standard, Rail, Train