in the US, a telephone number beginning with 800 that is free to use and is usually for calling business services. The company you are calling pays for the call.
Synonyms and related words
Telephone numbers
000
0800 number
0845 number
800 number
noun countable
US /ˌeɪt ˈhʌndrəd ˌnʌmbər/
Word Forms
singular
800 number
plural
800 numbers
DEFINITIONS1
1
in the U.S., a telephone number beginning with 800 that is free to use and is usually for calling business services. The company you are calling pays for the call.