Stretched to half a week by the Editor (4)
I believe the answer is:
eked
'stretched to' is the definition.
I can't tell whether this defines the answer.
'half a week by the editor' is the wordplay.
'half a' suggests halving the letters.
'by' means one lot of letters go next to another.
'the editor' becomes 'ed'.
'week' with half the letters taken is 'ek'.
'ek'+'ed'='EKED'
Can you help me to learn more?
(Other definitions for eked that I've seen before include "Lengthened; supplemented" , "Added to scantly" , "- - out: increased" , "... out, made to last through frugality" , "Made, a living say, laboriously" .)