Second doctor takes in present to work -- a plant (8)
I believe the answer is:
snowdrop
'a plant' is the definition.
The answer is an example.
'second doctor takes in present to work' is the wordplay.
'second' becomes 's' (common abbreviation).
'doctor' becomes 'dr' ('Dr' can be a synonym of 'doctor').
'takes in' indicates putting letters inside.
'present' becomes 'now' (I've seen this before).
'to work' becomes 'op' (abbreviation for opus**).
's'+'dr'='sdr'
'sdr' enclosing 'now' is 'snowdr'.
'snowdr'+'op'='SNOWDROP'
(Other definitions for snowdrop that I've seen before include "Wood anemone" , "White-flowered plant (Galanthus nivalis)" , "covering borders in spring" , "Small white flower of early spring" , "Late winter flower" .)