caller ID

call·er ID

[kaw-ler]
noun
a telephone service that allows a subscriber to identify a caller before answering by displaying the caller's telephone number on a small screen.

Origin:
1985–90

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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FOLDOC
Computing Dictionary

Caller ID definition

communications
(CID) A short piece of text transmitted by some telephone systems describing the origin of a call, e.g. the name of the caller. Some telephone handsets can display this. A computer telephony integration system might use it to trigger actions on the callee's computer such as looking up the caller in a database and displaying their details on screen.
There may also be a separate "caller id number" giving the telephone number of the originator of the call.
(2008-04-30)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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00:10
Caller id is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
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