Live at end of lake with beadle — a worker, possibly (9)
I believe the answer is:
'a worker possibly' is the definition.
(worker bee is a type of bee)
'live at end of lake with beadle' is the wordplay.
'live' becomes 'be' ('be' can be a synonym of 'live').
'at end of' indicates one should take the final letters.
'with' says to put letters next to each other.
'beadle' becomes 'bumble' (Mr Bumble is the beadle in Oliver Twist).
The final letter of 'lake' is 'e'.
'bee' after 'bumble' is 'BUMBLEBEE'.
(Other definitions for bumblebee that I've seen before include "social worker" , "Striped buzzer" , "Large furry flying insect" .)