A two-line whip.

plural of one-line whip

plural of single-line whip

plural of double-line whip

plural of three-line whip

plural of two-line whip

A single-line whip.

(Britain) A directive from an MP's superiors to attend a vote.

(Britain) A non-binding indication, given to an MP by the MP's superiors, of when a vote is expected to take place, and what outcome the MP's party would like.

(nautical) load line