Joined end of line on dole (4)
I believe the answer is:
mete
'dole' is the definition.
(I've seen this before)
'joined end of line on' is the wordplay.
'joined' becomes 'met' (meeting is a kind of joining).
'end of' suggests the final letters.
'on' says to put letters next to each other.
The final letter of 'line' is 'e'.
'met'+'e'='METE'
(Other definitions for mete that I've seen before include "Administer or hand out" , "To - out is to dispense (eg, justice)" , "Allot" , "Apportion" , "boundary" .)