Sir Francis or Mister Duck? (5)
I believe the answer is:
drake
This might be a double definition.
'sir francis' is the first definition.
(I've seen this in another clue)
'mister duck?' is the second definition.
'drake' can be an answer for 'duck?' (drake is a male duck). I'm not sure about the 'mister' bit.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for drake that I've seen before include "-'s Drum (Newbolt)" , "Ship" , "Male bird" , "one at home on the water" , "adventurer from Devon" .)