Definition of guest verb from the Oxford Advanced American Dictionary

 

guest

 verb
verb
NAmE//ɡɛst//
 
[intransitive]guest (on something)Verb Forms present simple I / you / we / they guest
 
he / she / it guests
 
past simple guested
 
-ing form guesting
 
 
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to take part in a television or radio show, a concert, a game, etc. as a visiting or temporary performer or player She guested on several talk shows while visiting New York. He guested for Regis Philbin on Friday.
See the Oxford Advanced Learner's Dictionary entry: guest