Definitions from Wiktionary ( )

▸ adjective:  (of a physical object) Having great weight.
▸ adjective:  (of a topic) Serious, somber.
▸ adjective:  Not easy to bear; burdensome; oppressive.
▸ adjective:  (British, slang, dated) Good.
▸ adjective:  (dated, late 1960s, 1970s, US) Profound.
▸ adjective:  (of a rate of flow) High, great.
▸ adjective:  (slang) Armed.
▸ adjective:  (of music) Loud, distorted, or intense.
▸ adjective:  (of weather) Hot and humid.
▸ adjective:  (of a person) Doing the specified activity more intensely than most other people.
▸ adjective:  (of the eyes) With eyelids difficult to keep open due to tiredness.
▸ adjective:  (of food) High in fat or protein; difficult to digest.
▸ adjective:  Of great force, power, or intensity; deep or intense.
▸ adjective:  Laden with that which is weighty; encumbered; burdened; bowed down, either with an actual burden, or with grief, pain, disappointment, etc.
▸ adjective:  Slow; sluggish; inactive; or lifeless, dull, inanimate, stupid.
▸ adjective:  Impeding motion; cloggy; clayey.
▸ adjective:  Not raised or leavened.
▸ adjective:  (of wines or spirits) Having much body or strength.
▸ adjective:  (obsolete) With child; pregnant.
▸ adjective:  (physics) Containing one or more isotopes that are heavier than the normal one.
▸ adjective:  (petroleum) Having high viscosity.
▸ adjective:  (finance) Of a market: in which the price of shares is declining.
▸ adjective:  (nautical, military) Heavily-armed.
▸ adjective:  (aviation, of an aircraft) Having a relatively high takeoff weight and payload.
▸ adjective:  Having a maximum takeoff weight exceeding 300,000 tons, as almost all widebodies do, generating high wake turbulence.
▸ adverb:  In a heavy manner; weightily; heavily; gravely.
▸ adverb:  (colloquial, nonstandard) To a great degree; greatly.
▸ adverb:  (India, colloquial) very
▸ noun:  (slang) A villain or bad guy; the one responsible for evil or aggressive acts.
▸ noun:  (slang) A doorman, bouncer or bodyguard.
▸ noun:  (journalism, slang, chiefly in the plural) A newspaper of the quality press.
▸ noun:  (aviation) A relatively large multi-engined aircraft.
▸ noun:  (theater, archaic, slang) A serious theatrical role.
▸ noun:  (military, historical) A member of the heavy cavalry.
▸ verb:  (often with "up") To make heavier.
▸ verb:  To sadden.
▸ verb:  (Australia, New Zealand, informal) To use power or wealth to exert influence on, e.g., governments or corporations; to pressure.
▸ adjective:  Having the heaves.

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