Fixed line limiting height for Jewish settlement (6)
I believe the answer is:
shtetl
'jewish settlement' is the definition.
(I've seen this before)
'fixed line limiting height' is the wordplay.
'fixed' becomes 'set' (both can mean decided or determined).
'line' becomes 'l' (used when specifying particular lines from a poem).
'limiting' indicates putting letters inside.
'height' becomes 'ht' (abbreviation).
'set'+'l'='setl'
'setl' going around 'ht' is 'SHTETL'.
'for' is the link.
(Other definitions for shtetl that I've seen before include "Formerly a Jewish community in an Eastern European town" , "Former community" , "Jewish settlement" , "Old Jewish community in East European town" , "Small Jewish town or village in Eastern Europe" .)