The Spanish word 'galleta' (meaning 'cookie' or 'cracker') has an interesting journey that starts with the Pre-Indo-European root 'cal-' meaning 'stone'. This root evolved into the Old French word 'gal' meaning 'pebble', which then became 'galet' ('small stone') in French. The French word then developed into 'galette', referring to a flat, round cake - the connection being the flat, round shape similar to a smooth stone. Finally, this word was borrowed into Spanish as 'galleta', taking on its current meaning of 'cookie' or 'cracker', maintaining the concept of a flat, round baked good.

While 'galleta' itself is a relatively common Spanish word, it's interesting to note that Spanish words for stone or pebble took different etymological paths. The connection between flat stones and flat baked goods has been lost in modern Spanish usage.

While English doesn't have any direct cognates of 'galleta', we do have the word 'galette' borrowed directly from French, which refers to a type of flat, round pastry or cake. This maintains the same connection between flat stones and flat baked goods that we see in the history of the Spanish word 'galleta'.