The Spanish verb 'embutir' (meaning 'to stuff' or 'to insert') comes from combining two Latin elements: the prefix 'in-' meaning 'into, in' and 'buttis' meaning 'cask' or 'barrel'. The prefix 'in-' evolved into 'em-' before the 'b' sound, which is a common phonetic change in Spanish. The original concept likely came from the action of putting or stuffing things into a barrel or cask, which then generalized to mean stuffing or inserting anything into any container or space.

A related Spanish word is 'embudo' (funnel), which shares the same Latin origins. Both words relate to the concept of putting something into a container - 'embutir' is the action of stuffing or inserting, while 'embudo' is a tool used to help pour or insert liquids into containers.

The English word 'butt' meaning 'a large cask or barrel' (as in 'wine butt') comes from the same Latin word 'buttis'. While this sense of 'butt' is somewhat archaic in modern English, it survives in words like 'buttress' (originally referring to the support for a barrel) and 'butler' (originally the servant in charge of the wine butts).