Reference meaning
twilight zone
Last updated
the lowest level of the ocean to which light can reach
Other meanings
2. noun
the ambiguous region between two categories or states or conditions (usually containing some features of both)
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 09464221-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.