Hierarchy:
Description:
{{construction}} A material, such as aggregate or precast concrete pavers, which employs its mass and the force of gravity to hold single-ply roof membranes in place.
Ngram:
Ngram Text:
ballast
Source:
Wiktionary
Issue:
0
Wiktionary tag:
Ngram Count:
1
Wikokit WikiText ID:
300458