cebolleta
spring onion
cebolla
onion
+
-eta
diminutive suffix
Cebolleta means spring onion and can be thought of as cebolla0 (onion0) + -eta1 (diminutive suffix1), literally meaning 'small onion'.
noun
- spring onionA young onion with a long stem, similar to a scallion or green onionAñade unas cebolletas picadas a la ensalada. // Add some chopped spring onions to the salad.