bandeja
tray
band
strip, flat surface
+
-eja
diminutive suffix
Bandeja means tray and can be thought of as a small flat surface0 (band0) with the diminutive suffix1 (-eja1).
noun
- trayA flat, usually rectangular container used for carrying or serving food and drinks.El camarero trajo la comida en una bandeja de plata. // The waiter brought the food on a silver tray.