infant

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A child in the earliest period of life, especially before he or she can walk.
2. n. Law A person under the legal age of majority; a minor.
3. adj. Of or being in infancy.
4. adj. Intended for infants or young children.
5. adj. Newly begun or formed: an infant enterprise.

Century Dictionary and Cyclopedia

1. n. child during the earliest period of its life; a young child. See infancy.
2. n. In law, a person who is not of full age; specifically (in Great Britain, the United States, etc.), one who has not attained the age of twenty-one years. Technically, by an application of the old rule that the law does not regard fractions of a day, it has been settled that a person becomes of age at the beginning of the last day of the twenty-first year. See age, n., 3.
3. n. A noble youth. See child, n., 8.
4. Of, pertaining to, characterized by, or characteristic of infancy; hence, tender; infantile; incipient: as, infant beauty; infant fortunes.
5. Of or pertaining to the legal state of infancy; minor.
6. Figuratively, not yet fully grown; still in an early stage of development or growth: as, infant colonies; an infant bud.
7. To bring forth as an infant; hence, to give origin or rise to.
8. n. A royal prince or princess of Spain or Portugal: as, the Infant Don Philip: not necessarily the heir to the throne. See infante, infanta.

Wiktionary

1. n. A very young human being, from birth to somewhere between six months and two years of age, needing almost constant care and/or attention.
2. n. A minor.

GNU Webster's 1913

1. n. A child in the first period of life, beginning at his birth; a young babe; sometimes, a child several years of age.
2. n. A person who is not of full age, or who has not attained the age of legal capacity; a person under the age of twenty-one years; a minor.
3. n. Same as Infante.
4. adj. Of or pertaining to infancy, or the first period of life; tender; not mature.
5. adj. Intended for young children.
6. v. To bear or bring forth, as a child; hence, to produce, in general.

WordNet 3.0

1. n. a very young child (birth to 1 year) who has not yet begun to walk or talk