Toss/tɔːs/ Definition 1 of 5Pro Tip 1/2Casual Action Used to describe a gentle or nonchalant action conducted without much thought. She tossed the keys onto the couch as she entered. Pro Tip 2/2Subtle Nuance 'Toss' often implies care or playfulness rather than the force or precision of 'throw'. He playfully tossed a pillow at his friend.