Definition of delicate for Students. 1  1 : pleasing because of fineness or mildness a delicate flavor. 2  2 : able to sense very small differences a delicate instrument. 3  3 : calling for skill and careful treatment a delicate operation. 4  4 : easily damaged delicate flowers. 5  5 : sickly 1 a delicate child. 6  6 : requiring tact a delicate subject.