Servile person (6)
(Other definitions for menial that I've seen before include "(Of work) unskilled" , "Inferior like servant" , "Servile, low" , "Domestic servant" , "Subservient, lowly" .)
'servile person' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for poodle that I've seen before include "Pet dog with clipped curly hair" , "Curly-haired breed of dog" , "Pet dog with clipped curly coat" , "Pet dog - lackey" , "Curly-coated dog" .)
(Other definitions for lapdog that I've seen before include "Pom, for one" , "One docile and subservient" , "Small pampered pooch" , "one of man's more diminutive best friends" , "Small pet - sycophant" .)
(Other definitions for flunkey that I've seen before include "Footman or slavish follower" , "Footman - stooge" .)