Posh tablet rejected in reading Little Women here? (8)
I believe the answer is:
lilliput
'little women here?' is the definition.
(island of tiny people in Gulliver's Travels)
'posh tablet rejected in reading' is the wordplay.
'posh' becomes 'u' (abbreviation for upper-class - opposite to non-U).
'tablet' becomes 'pill' (synonyms).
'rejected' is a reversal indicator.
'in' indicates putting letters inside.
'reading' becomes 'lit' (abbreviation for literature).
'u'+'pill'='upill'
'upill' reversed gives 'llipu'.
'llipu' going within 'lit' is 'LILLIPUT'.
(Other definitions for lilliput that I've seen before include "Fantastic place" , "Land visited by Gulliver" , "Country visited by Gulliver on his travels" , "fictional country" , "Land to which Gulliver first traveled" .)