Extraordinary ordinary seaman takes the lead (8)
I believe the answer is:
abnormal
'extraordinary' is the definition.
(I've seen this before)
'ordinary seaman takes the lead' is the wordplay.
I cannot quite understand how this works, but
'ordinary' could be 'normal' (I've seen this before) and 'normal' is found within the answer.
'seaman' could be 'ab' (short for able seaman) and 'ab' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for abnormal that I've seen before include "like 15 [ANOMALIES]" , "Extraordinary" , "Non-standard" , "Rum" , "Irregular" .)