The Spanish word 'batido' (meaning 'milkshake') comes from the past participle of the verb 'batir' (meaning 'to beat'), which itself derives from Latin 'battuere' meaning 'to beat' or 'to strike'. The word formation uses the Spanish past participle suffix '-ido'. The meaning evolved from the action of beating or mixing ingredients together to create the drink, similar to how we might say 'beaten' or 'blended' in English when referring to mixed drinks.

A simpler related Spanish word is the verb 'batir', which means 'to beat' or 'to whisk'. This is the base verb from which 'batido' is derived. When you see 'batir' in cooking contexts, it often refers to beating eggs or whipping cream. The connection between 'batir' and 'batido' is straightforward - a 'batido' is literally something that has been beaten or blended.

While not directly from the same Latin root, English speakers might find it helpful to connect 'batido' with English words like 'batter' (as in cake batter) and 'beat', which share similar meanings related to mixing and striking. The action of making a 'batido' involves beating or blending ingredients together, just as we beat ingredients to make a batter.