New hospital involved in two part check (7)
I believe the answer is:
inhibit
'check' is the definition.
(inhibiting is a kind of checking)
'new hospital involved in two part' is the wordplay.
'new' becomes 'n'.
'hospital' becomes 'h'.
'involved in' indicates putting letters inside.
'two' becomes 'ii' (roman numeral).
'part' becomes 'bit' (bit is a kind of part**).
'n'+'h'='nh'
'nh' placed inside 'ii' is 'inhi'.
'inhi'+'bit'='INHIBIT'
(Other definitions for inhibit that I've seen before include "Limit the range or extent of" , "Curb" , "Repress" , "Suppress" , "Hinder, restrain, prevent" .)