spongework

noun

spongework

noun

Etymology From sponge + -work.

1

Spongy material.

One tubular "pore" is capable of being crawled into and through, so that one emerges again in the passage 16 feet farther along. But there is no other spongework in the entire cavern.1956, J. Harlen Bretz, Caves of Missouri, page 233:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.