Hotel inside western city a mile and six feet (9)
I believe the answer is:
hexameter
'six feet' is the definition.
(line of poetry consisting of six metric feet)
'hotel inside western city a mile' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'inside' indicates putting letters inside.
'western city' becomes 'exeter'.
'mile' becomes 'm' (common abbreviation).
'a'+'m'='am'
'exeter' going around 'am' is 'exameter'.
'h'+'exameter'='HEXAMETER'
'and' is the link.
(Other definitions for hexameter that I've seen before include "Verse line of six metrical feet" , "Exeter ham? (anag)" , "line of poetry" .)