Directory
/dəˈrɛktəri/
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Definition
(noun) A list of names, addresses etc, of specific classes of people or organizations, often in alphabetical order or in some classification.
Sentence Examples
I looked up his telephone number in a telephone directory.
No, I don't. You had better look it up in a telephone directory.
CEFR Practice Quiz
I looked up his telephone number in a telephone ____.