Vehicles on the East End line (5)
I believe the answer is:
taxis
'vehicles' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Maybe you can see a link between them that I don't see?
'on the east end line' is the wordplay.
'on' means one lot of letters go next to another.
'end' indicates one should take the final letters.
'line' becomes 'axis' (axis is a kind of line).
The last letter of 'east' is 't'.
't'+'axis' is 'TAXIS'.
Can you help me to learn more?
(Other definitions for taxis that I've seen before include "return to right place" , "Cabs" , "Cars with a driver for hire" .)