Start to learn every single actor's first name (5)
I believe the answer is:
leach
'single actor's first name' is the definition.
I can't tell whether this defines the answer.
'start to learn every' is the wordplay.
'start to' suggests taking the first letters.
'every' becomes 'each' (synonyms).
The initial letter of 'learn' is 'l'.
'l'+'each'='LEACH'
Can you help me to learn more?
(Other definitions for leach that I've seen before include "Drain away through percolating liquid" , "Percolate through soil or ore" , "Filtrate" , "Drain away by percolation" , "Make liquid percolate through a solid" .)