Meaning of “sting” - Learner’s Dictionary

sting

noun uk us /stɪŋ/
WOUND [ C ]

a painful wound that you get when an insect, plant, etc puts poison into your skin:

a wasp/bee sting
UPSET [ no plural ]

the feeling of being upset by something:

the sting of defeat

(Definition of “sting noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)