laguna
/laˈɡuna/ · B2 · noun · f
lagoon
🏞️ laguna = lago (lake) + small-feminine ending, a lake-ish pool
From Latin lacūna, 'pit, hollow', related to lacus 'lake'. Same root gives English 'lacuna' (a gap) and 'lagoon', so the water sense and the gap or void sense both come from a hollow space.