What is touch? What is touch? To cause or permit a part of the body, especially the hand or fingers, to come in contact with so as to feel: reached out and touched the smooth stone. To bring something into light contact with: touched the sore spot with a probe. To bring (one thing) into light contact with something else: grounded the radio by touching a wire to it; touching fire to a fuse. To press or push lightly; tap: touched a control to improve the TV picture; touched 19 on the phone to get room service. To lay hands on in violence: I never touched him! To eat or drink; taste: She didn't touch her food. To disturb or move by handling: Just don't touch anything in my room! To meet without going beyond; adjoin: the ridge where his property touches mine. Mathematics To be tangent to.To come up to; reach: when the thermometer touches 90°. To match in quality; equal: Rival artists can't touch her work at its best. To deal with, especially in passing; treat briefly or allusively: some remarks touching recent events. To be pertinent to; concern: environmental problems that touch us all. To affect the emotions of; move to tender response: an appeal that touched us deeply. To injure slightly: plants touched by frost. To color slightly; tinge: a white petal touched with pink. To draw with light strokes.To change or improve by adding fine lines or strokes.To stamp (tested metal).Slang To wheedle a loan or handout from: touched a friend for five dollars. Archaic To strike or pluck the keys or strings of (a musical instrument).To play (a musical piece).To touch someone or something.To be or come into contact: Don't let the live wires touch. The act or an instance of touching.