Choose right lyric for conductor (9)
I believe the answer is:
electrode
'conductor' is the definition.
(electrode is a kind of conductor)
'choose right lyric' is the wordplay.
'choose' becomes 'elect' (electing is a kind of choosing).
'right' becomes 'r' (common abbreviation).
'lyric' becomes 'ode' (ode is a kind of lyric).
'elect'+'r'+'ode'='ELECTRODE'
'for' is the link.
(Other definitions for electrode that I've seen before include "Conducting contact" , "Conducting point by which electric current enters or leaves" , "Terminal of, eg, an acid battery" , "Conductor for electricity as it enters or leaves" , "Conductor by which current enters" .)