Word Study
close-quarter fighting |
close-set |
close-stool |
close-tongued |
closed |
closed book
| closed chain
| closed circuit
| closed corporation
| closed couplet
| closed curve
closed book
WORDNET DICTIONARY
Noun closed book has 1 sense
- closed book(n = noun.cognition) enigma, mystery, secret - something that baffles understanding and cannot be explained; "how it got out is a mystery"; "it remains one of nature's secrets" is a kind of perplexity
For further exploring for "closed book" in Webster Dictionary Online
