Duck taking drink on lake (4)
I believe the answer is:
Here is my best explanation:
'duck' is the definition.
(teal is a kind of duck)
'drink on lake' is the wordplay.
'drink' becomes 'tea' (tea is a kind of drink**).
'on' says to put letters next to each other.
'lake' becomes 'l'.
'taking' is the link.
(Other definitions for teal that I've seen before include "Strange tale of a duck", "Type of duck", "Bird", "Variety of duck", "DUCK", "Dark green-blue; duck", "Freshwater duck", "species", "Variety of small ducks" and "Greenish-blue colour".)