the.com/puffmold

means A puffball-type fungus whose mature fruiting body releases a cloud of spores when squeezed, struck, or stepped on.

from A plain compound of "puff" — the burst of air or dust it ejects, an old echoic word imitating the sound of breath — and "mold," from Old English form possibly tied to a root meaning "crumble" or "decay," the same family that gives us the fuzzy mold on bread. Together they name exactly what the thing does: a moldy organism that puffs. The more common name for these fungi is "puffball," and "puffmold" reads as a kindred regional or descriptive variant built from the same honest parts.