cav·ern·ous 
(kăvər-nəs)
(kăvər-nəs)adj.
1. Filled with caverns.
2. Resembling a cavern, as in depth, vastness, or effect: a cavernous yawn; cavernous echoes.
3. Anatomy Filled with cavities or hollow areas; porous.
cavern·ous·ly adv.
- lettering
- letterman
- letter of credence
- letter of credit
- letter of intent
- letter-perfect
- letterpress
- letter-quality
- letters of administration
- letters of marque
- letters patent
- letters testamentary
- let the cat out of the bag
- Lettish
- lettuce
- let up
- letup
- let up on
- leu
- leuc-
- leuc-
- leucine
- leucism
- leucistic
- leucite