German in docking area left on the edge (8)
I believe the answer is:
marginal
'on the edge' is the definition.
(I've seen this before)
'german in docking area left' is the wordplay.
'german' becomes 'g' (abbreviation).
'in' is an insertion indicator.
'docking area' becomes 'marina' (I can't justify this - if you can you should give a lot more credence to this answer).
'left' becomes 'l' (common abbreviation).
'g' inserted within 'marina' is 'margina'.
'margina'+'l'='MARGINAL'
Can you help me to learn more?
(Other definitions for marginal that I've seen before include "Borderline" , "Alarming (anag) - too small to matter" , "unsafe seat" , "On the edges of" , "on border" .)