Answer: rumbler

AnswerCrossword Clue
RUMBLERTank, e.g.
rumblertravel with a low reverberating sound wagons rumbled into town
rumblerto make a low heavy rolling sound thunder rumbling in the distance
rumblerengage in a rumble
rumblerone that rumbles (to make a deep, thunderous sound)
rumblerreveal or discover the true character of
rumblerspeak in a low rolling tone
rumblerutter or emit in a low rolling voice