A tampon in its dry, unused state. A tampon is a menstrual product designed to absorb blood and vaginal secretions by insertion into the vagina during menstruation. The meaning of CAN is be physically or mentally able to. How to use can in a sentence. May: Usage Guide CAN definition: 1. used to say that you can and will do something: 3. used to say that you…. Definition of can1 modal verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. can synonyms, can pronunciation, can translation, English dictionary definition of can. to be able to, have the power or skill to: I can take a bus to the airport. She can paint very well. Not to be … Can definition: Used to request or grant permission. How to use the modal verb 'can'. "Can" is one of the most commonly used modal verbs in English.