Definitions
There are 2 meanings of the phrase
Chat Up.
Chat Up - as a verb
Talk or behave amorously, without serious intentions
Example: "The guys always try to chat up the new secretaries"
Synonyms (Exact Relations)
butterflycoquetcoquettedallyflirtmashphilanderromanceHypernyms (Closely Related)
speaktalkHyponyms (Broadly Related)
Talk to someone with the aim of persuading him
Example Sentences
"He went to the bar to chat up some girls."
"She tried to chat up her crush at the party."
"The salesman tried to chat up customers at the store."
"I saw him trying to chat up the waitress."
"They always go to coffee shops to chat up their friends."