Definition of base verb from the Oxford Advanced American Dictionary

  

base

 verb
verb
NAmE//beɪs//
 
[usually passive]base somebody/something/yourself in…Verb Forms present simple I / you / we / they base
 
he / she / it bases
 
past simple based
 
-ing form basing
 
 
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 to use a particular city, town, etc. as the main place for a business, vacation, etc. They decided to base the new company in Houston. We're going to base ourselves in Tokyo and make trips from there. Phrasal Verbsbase something on/upon something
See the Oxford Advanced Learner's Dictionary entry: base