Cheek/tʃiːk/ Definition 1 of 4Pro Tip 1/2Facial Expression Cheek can indicate emotion, like blushing cheeks showing embarrassment or happiness. Her cheeks turned red with joy. Pro Tip 2/2Physical Affection A kiss on the cheek is a common way to show affection or greet someone in many cultures. They greeted each other with a kiss on the cheek.