1. With reference to the moon, to appear to become thinner or less full: "Every month the moon will wane and then wax and then wane again, etc."
2. To become smaller or less, to decrease in size, amount, length or quality: "Tiffany's interest in buying the fancy shoes might wane when she hears how expensive they are."

1. When referring to the moon, to appear to become larger or more full: "During the next two weeks the moon will wax and then everyone can see more of it."
2. To become larger or more, to increase in amount, size, etc.: "Albert's interest in the novel seems to wax depending on the amount of suspense there is."
3. To talk or write about something in a way that shows that you are experiencing a specified mood or feeling: "Whenever Gerald asks Cindy about her holiday, she will wax nostalgic for quite awhile about her trip to Europe."
4. To apply a protective substance to a surface: "Joe decided to wax his car even on a sunny day."

A hard substance that becomes soft when it is heated and which is used to make various products; such as, candles, crayons, or polish: "Peggy and Carl used wax to make a variety of candles which they like to use to light their table during evening meals."