to handle; to manage; to use; to bear one's self toward; as, to treat prisoners cruelly; to treat children kindly.-to discourse on; to handle in a particular manner, in writing or speaking; as, to treat a subject diffusely.-to entertain with food or drink, especially the latter, as a compliment, or as an expression of friendship or regard; as, to treat the whole company.-to negotiate; to settle; to make terms for.-to care for medicinally or surgically; to manage in the use of remedies or appliances; as, to treat a disease, a wound, or a patient.-to subject to some action; to apply something to; as, to treat a substance with sulphuric acid.-to entreat; to beseech.-to discourse; to handle a subject in writing or speaking; to make discussion; -- usually with of; as, cicero treats of old age and of duties.-to negotiate; to come to terms of accommodation; -- often followed by with; as, envoys were appointed to treat with france.-to give a gratuitous entertainment, esp. of food or drink, as a compliment.-a parley; a conference.-an entertainment given as an expression of regard.-that which affords entertainment; a gratification; a satisfaction; as, the concert was a rich treat.