Note: See the Oxford English Dictionary, third edition, for details of the Old and Middle English developments. The editors point out that earh is a rare poetic word, occurring mainly in the compound earhfaru "flight of arrows," the more usual older words for "arrow" being strǣl and flā; the popularity of arwe in later Old English prose may have resulted from influence of the Old Norse word. — The etymon *ark^w- "bow" (*h₂erk^w- if a is excluded as a possible vowel) has been compared with various names for plants, as Greek árkeuthos "juniper (Juniperus macrocarpa)," Russian rakíta (for *rokíta by vowel reduction) "the willow Salix fragilis," Bosnian-Croatian-Serbian ràkita "osier (Salix viminalis)" (both from Slavic *orkyta), Latvian ẽrcis "juniper." The presumed connection would be from the use of wood from these small trees as material for bows, though this is questionable (especially in the case of willows). In any case both sets of words appear to be of substratal origin.