The Spanish word 'entrecot', meaning 'ribeye steak', comes from French 'entrecôte', which literally means 'between the ribs'. The French term is a compound of 'entre' ('between') and 'côte' ('rib'). The French word 'côte' itself derives from Latin 'costa', meaning 'rib'.

This etymology makes perfect sense given that a ribeye steak is cut from the beef rib section, specifically from the meat between the ribs. The Spanish borrowed this culinary term directly from French, as France has historically had a strong influence on fine dining and culinary terminology throughout Europe.

A simpler related Spanish word is 'costal', meaning 'relating to the ribs' or 'of the ribs', which comes from the same Latin root 'costa'. Another common Spanish word is 'costilla', meaning 'rib', which is also derived from Latin 'costa'.

The English word 'coastal' is related to this same Latin root 'costa', though its meaning has shifted to refer to areas near the sea coast. This semantic shift occurred because the Latin word 'costa' could also mean 'side' or 'wall', and came to be used for the 'coastline' as the side or border of the land. Another related English word is 'cutlet', which came through French 'côtelette', a diminutive of 'côte', originally referring to a small rib or rib meat.