whipper-in

Etymology
From 🇰🇲.

Noun

 * 1)  A huntsman who keeps the hounds from wandering, and whips them in, if necessary, to the chase.
 * 2)  One who enforces the discipline of a party, and urges the attendance and support of the members on all necessary occasions.
 * 1)  One who enforces the discipline of a party, and urges the attendance and support of the members on all necessary occasions.
 * 1)  One who enforces the discipline of a party, and urges the attendance and support of the members on all necessary occasions.
 * 1)  One who enforces the discipline of a party, and urges the attendance and support of the members on all necessary occasions.