bar·tend·er
 /ˈbɑɚˌtɛndɚ/  noun  ,  pl   -ers [  count  ]
   US   : a person who serves drinks at a bar or restaurant
  bar·tend /ˈbɑɚˌtɛnd/  verb  , -tends, -tend·ed, -tend·ing [  no obj  ]
   He makes extra money by bartending on weekends.