plural of heavy roller

(nuclear physics) An ionized atom that is usually heavier than helium.

plural of heavy ion

(idiomatic) Slow-moving.

(idiomatic) The most demanding part of an endeavour; work requiring the most effort, resources, or consideration. / Used other than figuratively or idiomatically: see heavy, lifting.

Alternative form of heavy lifting

An alleged medical condition, described as an unpleasant sensation of pain and heaviness in the lower limbs.

(informal) Resembling or characteristic of heavy metal music.

(of horse racing) Going (i.e. conditions) that are wet and muddy (difficult to gallop on) / (idiomatic) Something that is boring; difficult to make progress on, or tedious

A heavy optical glass, consisting essentially of potassium borosilicate.