The Spanish word 'cepillo' (meaning 'brush') has an interesting evolution from Latin roots. It comes from the Spanish word 'cepo' (meaning 'stock' or 'trunk') combined with the diminutive suffix '-illo'. The word 'cepo' itself derives from the Latin word 'cippus', which meant 'post, stake, or trunk'. The development of meaning from a wooden post or trunk to a brush makes sense when you consider that early brushes were often made from wooden blocks with bristles attached.

A simpler related Spanish word is 'cepo', which means 'stock' or 'trunk' and is still used today, particularly in the context of traps or stocks (as in the medieval punishment device). You can think of 'cepillo' as literally meaning 'little stock/trunk', which evolved to mean 'brush' due to the wooden base of traditional brushes.

While there aren't many common English words directly related to 'cepillo', the Latin root 'cippus' (meaning post or stake) did make its way into some English technical terms. For example, 'cippus' is used in archaeology to refer to ancient Roman boundary markers or grave monuments in the form of stone posts.