c.1300, "silver penny," probably from M.E. sterre (see star), from the stars that appeared in the design of certain Norman coins, + dim. suffix -ling. The other theory is that it derives from O.Fr. estedre "stater" (see stater). Sense broadened by 1565 to "money having the quality of the sterling," and in 1601 to "English money in general." A pound sterling was originally "a pound weight of sterlings," equal to about 240 of them.