The Collaborative International Dictionary of English v.0.48:

Puffball \Puff"ball`\, n. (Bot.)
   A kind of ball-shaped fungus (Lycoperdon giganteum, and
   other species of the same genus) full of dustlike spores when
   ripe; -- called also bullfist, bullfice, puckfist,
   puff, and puffin.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bullfist \Bull"fist\, Bullfice \Bull"fice\, n. [Cf. G. bofist,
   AS. wulfes fist puffball, E. fizz, foist.] (Bot.)
   A kind of fungus. See Puffball.
   [1913 Webster] Bull fly