Duck as Bob wielded pointy garden tool (9)
I believe the answer is:
sheldrake
'duck' is the definition.
(sheldrake is a kind of duck)
'bob wielded pointy garden tool' is the wordplay.
I cannot really see how this works, but
'bob' could be 's' (abbreviation for shilling - 'bob' before 1971) and 's' is located in the answer.
'tool' could be 'rake' (rake is a kind of tool) and 'rake' is found in the answer.
The remaining letters 'held' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'as' acts as a link.
Can you help me to learn more?
(Other definitions for sheldrake that I've seen before include "Bird" , "natural swimmer" , "Diving duck with serrated bill" , "Large crested diving duck" , "flighty type" .)