Noah Webster's New International Dictionary of the English Language
1. (a.) Having the heaves.
2. (superl.) Heaved or lifted with labor; not light; weighty; ponderous; as, a heavy stone; hence, sometimes, large in extent, quantity, or effects; as, a heavy fall of rain or snow; a heavy failure; heavy business transactions, etc.; often implying strength; as, a heavy barrier; also, difficult to move; as, a heavy draught.
3. (superl.) Not easy to bear; burdensome; oppressive; hard to endure or accomplish; hence, grievous, afflictive; as, heavy yokes, expenses, undertakings, trials, news, etc.
4. (superl.) Laden with that which is weighty; encumbered; burdened; bowed down, either with an actual burden, or with care, grief, pain, disappointment.
5. (superl.) Slow; sluggish; inactive; or lifeless, dull, inanimate, stupid; as, a heavy gait, looks, manners, style, and the like; a heavy writer or book.
6. (superl.) Strong; violent; forcible; as, a heavy sea, storm, cannonade, and the like.
7. (superl.) Loud; deep; -- said of sound; as, heavy thunder.
8. (superl.) Dark with clouds, or ready to rain; gloomy; -- said of the sky.
9. (superl.) Impeding motion; cloggy; clayey; -- said of earth; as, a heavy road, soil, and the like.
10. (superl.) Not raised or made light; as, heavy bread.
11. (superl.) Not agreeable to, or suitable for, the stomach; not easily digested; -- said of food.
12. (superl.) Having much body or strength; -- said of wines, or other liquors.
13. (superl.) With child; pregnant.
14. (adv.) Heavily; -- sometimes used in composition; as, heavy-laden.
15. (v. t.) To make heavy.