¹ smile noun

• an expression on your face that makes the corners of your mouth turn up and that shows happiness, amusement, pleasure, affection, etc.

² smile verb

• to make a smile : to make the corners of your mouth turn up in an expression that shows happiness, amusement, pleasure, affection, etc. —often + at
• to show or express (something, such as approval, encouragement, etc.) by a smile
• to say (something) with a smile