Roman pair squeezing a medic's feet (5)
I believe the answer is:
iambi
'feet' is the definition.
(plural of iamb, a type of metrical foot in poetry)
'roman pair squeezing a medic's' is the wordplay.
'roman pair' becomes 'II' (two in Roman numerals).
'squeezing' means one lot of letters goes inside another (squeeze can mean hug or embrace).
'medic' becomes 'MB' (Bachelor of Medicine).
'a'+'mb'='amb'
'ii' enclosing 'amb' is 'IAMBI'.
(Other definitions for iambi that I've seen before include "Poetic feet" , "Poetic pieces" , "Feet of two syllables (one short and one long)" , "Metrical patterns" , "Film theatre" .)