Disregard poetry in Old English (7)
I believe the answer is:
oversee
'disregard' is the definition.
(I've seen this before)
'poetry in old english' is the wordplay.
'poetry' becomes 'verse' (lines written in verse).
'in' indicates putting letters inside.
'old english' becomes 'OE'.
'verse' placed into 'oe' is 'OVERSEE'.
(Other definitions for oversee that I've seen before include "risk eyestrain?" , "Supervise, keep an eye on" , "Superintend, manage" , "Inspect" , "Act as tutor" .)