[pahr-tee lahyn for 1, 2; pahr-tee lahyn for 3, 4] 
| 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. |
| party line n.
|
party line
The official policy of an organization or government, as in The current party line opposes legalized abortion in all cases. This term, dating from about 1830, was originally used for a political party's official policy but in the mid-1900s was almost exclusively applied to the rigid dicta of the Soviet Communist Party. Since then it has returned to looser use.