Pronunciation: (pär'tē līn' for 1, 2; pär'tē līn" for 3, 4), [key]
1. the authorized, prescribed policies and practices of a group, esp. of the Communist party, usually followed by the members without deviation; official philosophy or credo.
2. the guiding policy, tenets, or practices of a political party: The judge was chosen on party lines.
3. a telephone line connecting the telephones of a number of subscribers by one circuit to a central office, used in some rural areas.
4. the boundary line separating adjoining properties.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.