The term 'make eyes' is an expression used to describe the act of flirting with someone. The crossword solutions LEER (4 letters), OGLE (4 letters), and FLIRT (5 letters) are all words that can be used to describe this behavior. LEER means to look at someone with a sly or suggestive expression, OGLE means to look at someone in a bold or flirtatious way, and FLIRT means to behave amorously without serious intent. All three words can be used to describe the act of making eyes.