cave

I

cave, cavern (New American Roget's College Thesaurus)

n. recess, grotto; lair, burrow, den. See concavity, abode.

II

(Roget's IV) n.

Syn. cavern, hollow, rock shelter, grotto; see hole 3 .

III

(Roget's 3 Superthesaurus) n.

cavern, grotto, tunnel, hole, *yawning chasm, hollow, cavity, underground chamber, subterranean passage, catacomb.

WORD FIND

• carved out from this rock: limestone

• crawl space: crawl, crouchway

• dripping water and mineral formation: dripstone

• entrance area exposed to daylight: twilight zone

• explorer: spelunker

• exploring: spelunking

• geological area with many caves, sinkholes: karst

• high, narrow passage: canyon

• iciclelike formation hanging from roof: stalactite

• iciclelike formation on floor: stalagmite

• inhabitant: troglodyte, troglobite, troglophile

• joined stalactite and stalagmite: column

• large chamber: gallery

• pool of water edged with calcite: gour

• study of: speleology

• tiny, thin stalactite: soda straw

• underwater passage: sump, syphon

• vertical shaft: chimney, pitch

IV

(Roget's Thesaurus II) noun A hollow beneath the earth's surface: cavern, grotto. See CONVEX.