B1
to force air out through your mouth
Dictionary examples:
He blew on his glasses to clean them and they flew off his face! (0.0)
Tom blew on his soup so hard, it splashed onto his face! (0.0)
He blew on his hot pizza and sent toppings flying across the table! (0.0)
She blew on her coffee before taking a sip. (53.5)