Book lender ignoring railway sign (5)
I believe the answer is:
libra
'sign' is the definition.
(sign of the zodiac)
'book lender ignoring railway' is the wordplay.
I cannot really understand how this works, but
'book' could be 'b' (abbreviation for book) and 'b' is found in the answer.
'railway' could be 'r' (eg in Great Western Railway) and 'r' is found in the answer.
The remaining letters 'lia' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for libra that I've seen before include "Person born under Scales sign" , "Someone born between September 23 and October 22" , "Zodiacal sign" , "Seventh sign of the Zodiac" , "Scales constellation" .)