From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( v. t.) To dissipate by heat the volatile parts of, as ores.

(2): ( v. t.) To dry and parch by exposure to heat; as, to roast coffee; to roast chestnuts, or peanuts.

(3): ( v. t.) Hence, to heat to excess; to heat violently; to burn.

(4): ( v. i.) To undergo the process of being roasted.

(5): ( v. i.) To cook meat, fish, etc., by heat, as before the fire or in an oven.

(6): ( v. t.) To cook by surrounding with hot embers, ashes, sand, etc.; as, to roast a potato in ashes.

(7): ( n.) That which is roasted; a piece of meat which has been roasted, or is suitable for being roasted.

(8): ( v. t.) To cook by exposure to radiant heat before a fire; as, to roast meat on a spit, or in an oven open toward the fire and having reflecting surfaces within; also, to cook in a close oven.

(9): ( a.) Roasted; as, roast beef.

(10): ( v. t.) To banter severely.

King James Dictionary [2]

Roast, If the verb is from the noun, the sense is to dress or cook on a gridiron or grate, and rist, rost, coincide in elements with L. rastellum, a rake. If the verb is the root, the sense probably is to contract or crisp, or to throw or agitate, hence to make rough.

1. To cook, dress or prepare meat for the table by exposing it to heat, as on a spit. In a bake-pan, in an oven or the like. We now say, to roast meat on a spit, in a pan, or in a tin oven, &c. to bake meat in an oven to broil meat on a gridiron. 2. To prepare for food by exposure to heat as, to roast apples or potatoes to roast eggs. 3. To heat to excess to heat violently.

Roasted in wrath and fire.

4. To dry and parch by exposure to heat as, to roast coffee. 5. In metallurgy, to dissipate the volatile parts of ore by heat. 6. In common discourse, to jeer to banter severely.

Roast, n. That which is roasted.

Roast, a. for roasted. Roasted as roast beef.

Roast, n. In the phrase, to rule the roast, this word is a corrupt pronunciation.

Wilson's Dictionary of Bible Types [3]

 Proverbs 12:27 (a) This exposes the lazy man. He does not finish what he begins. He does not bring to a conclusion the work that he starts. He ends up short of his goal.