One who thumps. / (slang) A single-cylinder engine, especially four-stroke engines or those with large engine displacements.

A rain shower accompanied by thunder and lightning.

(often derogatory) Fat thighs.

(often derogatory) A person, usually a woman, with fat thighs.

present participle of thunder

Of, pertaining to, or accompanied by thunder. / Producing a noise or effect like thunder; thunderous. / (colloquial) Very great; extraordinary.

A loud percussive sound, like thunder. / (archaic) A thunderstorm.

Very loud; that sounds like thunder; thundersome. Also in metaphorical expressions, signifying fury.

The top portion of a cumulonimbus cloud, which tends to be flattened or fibery in appearance, and may be indicative of thunderstorm activity.

A general guideline, rather than a strict rule; an approximate measure or means of reckoning based on experience or common knowledge. / (attributive, usually hyphenated) Approximated, guesstimated.