Real Dictionary

arrow
countable noun: An arrow is a long thin weapon which is sharp and pointed at one end and which often has feathers at the other end. An arrow is shot from a bow.
countable noun: An arrow is a written or printed sign that consists of a straight line with another line bent at a sharp angle at one end. This is a printed arrow: →. The arrow points in a particular direction to indicate where something is.

Arrow in American English
a slender shaft, usually pointed at one end and feathered at the other, for shooting from a bow
Kenneth Joseph1921- ; U.S. economist
noun: a slender, straight, generally pointed missile or weapon made to be shot from a bow and equipped with feathers at the end of the shaft near the nock, for controlling flight

arrow in British English
noun: a long slender pointed weapon, usually having feathers fastened at the end as a balance, that is shot from a bow