flock

Short definition from Wiktionary

Noun

1. 1
   A number of birds together in a group, such as those gathered together for the purpose of migration.
2. 2
   A large number of animals associated together in a group; commonly used of sheep, but (dated) also used for goats, farmed animals, and a wide variety of animals.
3. 3
   Those served by a particular pastor or shepherd.
4. 4
   A large number of people.
5. 5
   A religious congregation.
6. 6
   Coarse tufts of wool or cotton used in bedding.
7. 7
   A lock of wool or hair.
8. 8
   Very fine sifted woollen refuse, especially that from shearing the nap of cloths, formerly used as a coating for wallpaper to give it a velvety or clothlike appearance; also, the dust of vegetable fibre used for a similar purpose.

Verb

1. 1
   To congregate in or head towards a place in large numbers.
2. 2
   To flock to; to crowd.
3. 3
   To coat a surface with dense fibers or particles; especially, to create a dense arrangement of fibers with a desired nap.
4. 4
   To cover a Christmas tree with artificial snow.
5. 5
   To treat a pool with chemicals to remove suspended particles.

Proper noun

1. 1
   A surname.