Seed coat (4)
'seed coat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aril that I've seen before include "Part of seed" , "Hairy or fleshy seed covering (botany), lair (anag.)" , "appendage" , "Seed cover; lair (anag.)" .)
'seed coat' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for testa that I've seen before include "Seed-coat" , "Protective covering" , "Botanical term" , "hard case" , "protective coat" .)