noun.
Miscarriage; the expulsion of the fetus before it is viable—that is, in women, before about the 28th week of gestation.
noun.
The product of untimely birth; hence, a misshapen being; a monster.
noun.
Any fruit or product that does not come to maturity; hence, frequently, in a figurative sense, anything which fails in its progress before it is matured or perfected, as a design or project.
noun.
In botany and zoology, the arrested development of an organ at a more or less early stage.