'agostadero' originates from Spanish, specifically the word 'agostar,' where 'agosto' meant 'August' and '-adero' is a suffix indicating a place.

'agostar' transformed into the Spanish word 'agostadero,' and eventually became the modern English word 'agostadero' through borrowing.

Initially, it meant 'a place for grazing in August,' but over time it evolved into its current meaning of 'a pasture used during the dry season.'