weanling

Noun

 * 1) Any young mammal that has been recently weaned.
 * 2) Specifically, a human child that has been recently weaned.
 * In developing countries, weanlings are most at risk of malnutrition.
 * 1) Specifically, a young horse that has been weaned from its mother, but is less than one year old (usually 5-12 months old).
 * The weanling was sold to the local horse dealer.