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Webster 1913 Edition

Adj.

Noun.

from

Verb.

ppr.

Making a low, heavy continued sound; as rumbling thunder. A rumbling noise is a low, heavy, continued noise.

Noun.

A low, heavy, continued sound. Jer. 47.

rumbling ‎(comparative more rumbling, superlative most rumbling)

rumbling ‎(plural rumblings)

The sound of complaint.
The rumblings of the masses precedes the crumbling of the state.
A deep low noise.
The rumbling of distant thunder.

rumbling