attend to in WordNet English dictionary

1. work for or be a servant to
   "May I serve you?"; "She attends the old lady in the wheelchair"; "Can you wait on our table, please?"; "Is a salesperson assisting you?"; "The minister served the King for many years"
   serve  attend to  wait on  attend  assist 
   
2. get down to; pay attention to; take seriously
   "Attend to your duties, please"
   attend to  take to heart