Definition of seed-coat:
(n) :
(countable, agriculture) Any propagative portion of a plant which may be sown, such as true seeds, seed-like fruits, tubers, or bulbs.
(n) :
(countable, botany) A fertilized and ripened ovule, containing an embryonic plant.
(n) :
(countable) Any small seed-like fruit.
(n) :
(uncountable, collective) An amount of seeds that cannot be readily counted.
(n) :
(countable) A fragment of coral.
(n) :
(uncountable) Semen.