King takes in poet (5)
I believe the answer is:
keats
'poet' is the definition.
(John Keats)
'king takes' is the wordplay.
'king' becomes 'K' (chess abbreviation).
'takes' becomes 'eats' (eating is a kind of taking).
'k'+'eats'='KEATS'
'in' is the link.
(Other definitions for keats that I've seen before include "Author of Endymion and Ode to a Nightingale" , "One of two born together" , "Grecian Urn poet" , "English romantic poet, d. 1821" , "English poet, 1795-1821" .)