Finish posting and knock off at the front (6)
I believe the answer is:
ending
'front' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'finish posting and knock off at' is the wordplay.
'finish' suggests the final letters.
'and' means one lot of letters go next to another.
'knock off' becomes 'end' (I've seen this in another clue).
'at' becomes 'in' (synonymous in some cases - eg at school, in school).
The last letter of 'posting' is 'g'.
'end'+'in'='endin'
'g' put after 'endin' is 'ENDING'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for ending that I've seen before include "Armageddon?" , "Stopping" , "Finish" , "Terminating" , "ultimately" .)