More than one batted, opening with 50, leading test series (9)
I believe the answer is:
eyelashes
'more than one batted' is the definition.
I can't tell whether this defines the answer.
'opening with 50 leading test series' is the wordplay.
'opening with' becomes 'eye' (eye is a kind of opening. I am not sure about the 'with' bit.).
'50' becomes 'l' (Roman numeral).
'leading' is a charade indicator (letters next to each other) (some letters go in front of others).
'test series' becomes 'ashes' (I've seen this before).
'eye'+'l'+'ashes'='EYELASHES'
Can you help me to learn more?
(Other definitions for eyelashes that I've seen before include "ocular features" , "Facial hairs" , "they're on the lids" , "They can flutter" , "Facial features" .)