'pollen-filled' originates from the combination of 'pollen' and 'filled', where 'pollen' refers to the fine powdery substance consisting of pollen grains and 'filled' means to be full of something.

'pollen' comes from the Latin word 'pollen', meaning 'fine flour or dust', and 'filled' is derived from the Old English 'fyllan', meaning 'to fill'.

Initially, 'pollen' referred to 'fine flour or dust', but over time it evolved to specifically mean the powdery substance produced by flowers.