Significado da palavra ballast em português

O que significa ballast em inglês? Descubra o significado, a pronúncia e o uso específico desta palavra com a Lingoland

ballast

US /ˈbæl.əst/
UK /ˈbæl.əst/

Substantivo

1.

lastro

heavy matter such as sand, stone, or water that is used at the bottom of a ship or a hot-air balloon to make it heavier, or the small stones on which railroads and roads are made:

Exemplo:
The weed may have been accidentally imported in soil used as ship ballast.
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