Issue showing English chap having had a meal (7)
I believe the answer is:
emanate
'issue' is the definition.
(both can mean to give out or radiate)
'english chap having had a meal' is the wordplay.
'english' becomes 'E' (abbreviation as in OED).
'chap' becomes 'man' (chap can mean a man).
'having' means one lot of letters go next to another.
'had a meal' becomes 'ate' (ate a meal).
'e'+'man'+'ate'='EMANATE'
'showing' is the link.
(Other definitions for emanate that I've seen before include "Flow or proceed from" , "Proceed or issue forth" , "Give out, emit" , "Issue or originate from manatee" , "spring" .)