Dictionary.com
Thesaurus.com
Synonyms

call girl

American  

noun

  1. a female prostitute with whom an appointment can be made by telephone, usually to meet at the client's address.

  2. (formerly) a prostitute available to be called on at a brothel.


call girl British  

noun

  1. a prostitute with whom appointments are made by telephone

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of call girl

An Americanism dating back to 1930–35