In electricity, in the making of glow-lamps, to coat (the filament) with a deposited layer of carbon.n. A plaster or a salve made of wax, lard, etc., spread on cloth; a cerate.To behave to or toward; conduct one's self in a certain manner with respect to; use.To discuss; discourse of; consider.To address; discourse to.To negotiate; settle.To handle, manipulate, or develop in any manner, especially in writing or speaking, or by any of the processes of art.To look upon; consider; regard.To manage in the application of remedies: as, to treat a fever or a patient.To sudject to the action of some chemical agent or reagent.To entertain; give a pleasure or treat to; especially, to entertain without expense to the recipient; give food or drink to, as a compliment or an expression of friendliness or regard.To entreat; beseech; solicit.To discourse; handle in writing or speaking; make discussion: formerly used absolutely, now followed usually by of, rarely by upon.To negotiate, especially for peace; discuss terms of accommodation: used absolutely or with a limiting phrase.To give an entertainment which costs the recipient nothing; especially, to bear the expense of food. drink, or any pleasure for another as a compliment or expression of good will. Compare to stand treat, under treat, n.n. Parley; conference; treaty; discourse; discussion.n. An entertainment given as a compliment or expression of regard.n. Something given as an entertainment; something paid for in compliment to another.n. One's turn to treat (see treat, v. i., 3); especially, one of several rounds of drinks: as, it is my treat now.n. Anything which affords much pleasure; that which is peculiarly enjoyable; unusual gratification.n. An entreaty.