orphan

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A child whose parents are dead.
2. n. A child who has been deprived of parental care and has not been adopted.
3. n. A young animal without a mother.
4. n. One that lacks support, supervision, or care: A lack of corporate interest has made the subsidiary an orphan.
5. n. An orphan technology or product.
6. n. A line of type beginning a new paragraph at the bottom of a column or page.
7. n. A short line of type at the bottom of a paragraph, column, or page; a widow.
8. adj. Deprived of parents.
9. adj. Intended for orphans: an orphan home.
10. adj. Lacking support, supervision, or care.
11. adj. Not developed or marketed, especially on account of being commercially unprofitable: "an aggregation of every orphan technology at the Pentagon, stuff that's been around for years that nobody would buy” ( Harper's).
12. v. To deprive (a child or young animal) of a parent or parents.

Century Dictionary and Cyclopedia

1. Bereft of parents; fatherless, motherless, or without either father or mother; bereaved: said of a child or a young and dependent person.
2. Not under control or protection analogous to that of a parent; unprotected; unassisted.
3. Of or belonging to a child bereft of either parent or of both parents.
4. n. A child bereaved of one parent or of both parents, generally the latter.
5. To reduce to the state of being an orphan; bereave of parents.

Wiktionary

1. n. A person, especially a minor, both or (rarely) one of whose parents have died.
2. n. A young animal with no mother.
3. n. Anything that is unsupported, as by its source, provider or caretaker, by reason of the supporter's demise or decision to abandon.
4. n. A single line of type, beginning a paragraph, at the bottom of a column or page.
5. n. Any unreferenced abstract object.
6. adj. Deprived of parents (also term).
7. adj. Remaining after the removal of some form of support.
8. v. To deprive of parents (used almost exclusively in the passive)
9. v. To make unavailable, as by unlinking the last remaining pointer to.

GNU Webster's 1913

1. n. A child bereaved of both father and mother; sometimes, also, a child who has but one parent living.
2. adj. Bereaved of parents, or (sometimes) of one parent.
3. v. To cause to become an orphan; to deprive of parents.

WordNet 3.0

1. n. someone or something who lacks support or care or supervision
2. n. a young animal without a mother
3. n. the first line of a paragraph that is set as the last line of a page or column
4. n. a child who has lost both parents
5. v. deprive of parents