Definition of IM verb from the Oxford Advanced Learner's Dictionary

 

IM

 verb
verb
BrE BrE//ˌaɪ ˈem//
 
; NAmE NAmE//ˌaɪ ˈem//
 
Verb Forms present simple I / you / we / they IM
BrE BrE//ˌaɪ ˈem//
 
; NAmE NAmE//ˌaɪ ˈem//
 
he / she / it IMs -ing form IMing past simple IMd past participle IMd
 
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(IMs, IMing, IMd, IMd) [transitive, intransitive] IM (somebody) | IM somebody something = instant-message