come in in WordNet English dictionary

1. be received
   "News came in of the massacre in Rwanda"
   come  come in 
   
2. take a place in a competition; often followed by an ordinal
   "Jerry came in third in the Marathon"
   place  come in  come out 
   
3. to insert between other elements
   "She interjected clever remarks"
   interject  come in  interpose  put in  throw in  inject 
   
4. to come or go into
   "the boat entered an area of shallow marshes"
   enter  come in  get into  get in  go into  go in  move into 
   
5. come into fashion; become fashionable
   come in 
   

come in in English Wiktionary