heavy-heartˈed adjective

Weighed down with grief

heavy horse noun

A large draught horse

heavy hydrogen noun

1. Deuterium
2. Also tritium

heavy industry see under industry

heavy-ladˈen adjective

With a heavy burden

heavy metal noun

1. A metal of high specific gravity, usu above 5
2. Guns or shot of large size
3. Great influence or power
4. A person to be reckoned with
5. A particularly loud, simple and repetitive form of hard rock (music)

heavy oil noun

A hydrocarbon that is denser than water, esp one derived from coal tar

heavy particle noun

A baryon

heavy petting noun

Sexual activity that stops just short of full intercourse

heavy rock noun (music)

Hard rock

heavy spar noun

Barytes

heavy swell noun

A rough sea

heavy water noun

Water in which deuterium takes the place of ordinary hydrogen, or a mixture of this and ordinary water

heavˈyweight noun

1. A person or thing well above the average weight
2. Someone important or very influential (informal)
3. A competitor in the heaviest class (sport)
4. A weight category, applied esp in boxing
5. A sportsperson of the specified weight for the category (eg in professional boxing above middleweight, light heavyweight (maximum 79kg/175lb), cruisˈerweight (maximum 86kg/190lb), and heavˈyweight any weight above these)

1. Of or relating to heavyweights
2. Important or influential (informal)

heavy wet noun (old sl)

A drink of strong ale, or ale and porter mixed

be heavily into (informal)

To be keen on or an enthusiastic practitioner of

be heavy going see under going¹

heavy marching order

The condition of troops fully equipped for field service

the heavies

1. The heavy cavalry (military)
2. Those who play heavy parts (theatre)
3. The more serious, highbrow newspapers and journals, etc (informal)
4. (shares in) the heavy industries