puff along

puff along

To move or progress at a slow (possibly labored) but steady pace. Don't worry, the project is still puffing along, in spite of all the setbacks. I'd be happy to go for a run with you, as long as you don't mind me puffing along.
See also: puff
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

puff along

 
1. [for someone] to run along, puffing to breathe. Sam puffed along, jogging on his morning route. As Wally puffed along, he thought again about going on a diet.
2. [for an engine] to move along, putting out puffs of smoke or steam. The old engine puffed along, driving the small boat slowly up the river. The locomotive puffed along, not making very much headway up the hill.
See also: puff
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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