WordWeb Online

1. Provide a part of a whole amount; give towards some cause
   "I chipped in at the office";
   - contribute, give, kick in
    
2. Break into a conversation
   - chime in [informal], cut in, put in, butt in, barge in [informal], break in

Derived forms: chipped in, chips in, chipping in

Type of: break up, cut off, disrupt, give, interrupt