Puff away on To smoke a cigarette, cigar, or pipe. He sat on the porch, puffing away on his cigar. He was puffing away on his pipe while reading the newspaper.

Puff out (1) To fill with air. A gust of wind puffed out the boat's sails. Come on, puff that chest out! Put your shoulders back! She puffed out her cheeks, made a wish, and blew out the candles on her cake.

Puff out (2) To blow out air or smoke quickly and forcefully. Puff the candles out. The volcano puffed out white smoke into the sky. The old car's muffler puffed out a cloud of black smoke.

Puff up (1) To make something appear more impressive than it actually is, often through exaggeration or embellishment. The salesman tried to puff up the product's features to make it seem more valuable.

Puff up (2) To inflate. Person1: "Why didn't the bread puff up?
Person2: "Because I ran out of yeast. Frogs puff up their throats like balloons. She was wearing sunglasses to hide her puffed up eyes. Birds puff up their feathers for better insulation and to appear larger to predators.