Plate of meat eaten leisurely for starters (7)
But I've got no explanation for this one! Could you help me understand?
(Another definition for lamella that I've seen is " Thin plate".)
'plate' is the definition.
(I know that roundel is a type of armor plate)
'meat eaten leisurely for starters' is the wordplay.
'meat' becomes 'round' (round is a kind of meat).
'for starters' suggests taking the first letters.
The first letters of 'eaten leisurely' is 'el'.
'round'+'el'='ROUNDEL'
'of' acts as a link.
(Other definitions for roundel that I've seen before include "Circular emblem (heraldry)" , "Circular identifying mark on a military aircraft" , "Refrain" , "Circular marking on RAF plane" , "Circle identifying aircraft" .)