Mine/maɪn/ Definition 1 of 4Pro Tip 1/3Emotional Attachment Used to express a strong personal connection with something. This necklace is mine, given by my grandmother. Pro Tip 2/3Exclusive Ownership Stresses that no one else has a claim to the item. Keep away, that seat is mine! Pro Tip 3/3Error Correction Useful for correcting someone when they mistake ownership. Actually, that's not yours; it's mine.