A strong puff or explosive emission of air, powder, smoke, etc., especially from the firing of a gun; (informal) a shot from a musket or hunting gun.

A tube through which air can be blown, especially a simple form of bellows (obsolete). Now English regional: specifically a pea-shooter, (also occasionally) a popgun.

A powder puff.

Puffed up, swollen; soft, spongy. Also figurative. Now chiefly in "pluff mud" noun US, regional (chiefly South Carolina) a type of soft, silty mud found in tidal marshes.

Representing a puffing or explosive sound. Also as adverb: with a pluff.

To puff; to blow out with a puff, especially suddenly or explosively. Also with object: to blow or propel (something) from the mouth or through a tube. Formerly (Scottish): specifically †to fire a gun, to shoot (obsolete).

To swell up, become puffed up. Frequently with up.