Verb
1. behave carelessly or indifferently;
"Play about with a young girl's affection"2. waste time;
"Get busy--don't dally!"3. talk or behave amorously, without serious intentions;
"The guys always try to chat up the new secretaries""My husband never flirts with other women"4. consider not very seriously;
"He is trifling with her""She plays with the thought of moving to Tasmania"