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1. Used to connect words, clauses or sentences; used to indicate that the following thing is also included, or add an additional point
   "eggs, chips and bacon"
    
2. In order to; used instead of "to", especially after try, come, go
   "I'll try and do that before tomorrow"
    
3. Used to indicate causation or something that follows
   "do that and I'll scream"

1. With the addition of; increased by
   "one and one is two";
   - plus

Encyclopedia: And, per se, and