cantinero
bartender
cantina
bar, canteen
+
-ero
person who does something
Cantinero means bartender and can be thought of as a person (-ero1) who works in a bar or canteen0 (cantina0).
noun
- bartenderA person who works behind a bar serving drinksEl cantinero preparó un cóctel delicioso. // The bartender prepared a delicious cocktail.