They may be all in a quiver (6)
I believe the answer is:
arrows
'they' is the definition.
Both the answer and definition are plural nouns.
Maybe there's a link between them I don't understand?
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for arrows that I've seen before include "Missiles for the bowman" , "red ones displayed at airshows" , "Those in a quiver" , "Bolts that are shot" , "Missiles for the archer" .)