Leaves Kelvin to find wood (4)
I believe the answer is:
Here is my best explanation:
'wood' is the definition.
(teak is a kind of wood)
'leaves kelvin' is the wordplay.
'leaves' becomes 'tea' (I've seen this before).
'kelvin' becomes 'k' ('K' can be a synonym of 'kelvin').
'to find' is the link.
(Other definitions for teak that I've seen before include "Valuable, dense wood", "Hard strong wood", "A SE Asian hardwood", "E. Indies hardwood", "Quality timber", "Type of wood", "Heavy wood of a tall evergreen Asian tree", "Hardwood tree", "Hard durable timber" and "Strong heavy wood of an Asian tree".)