What is the meaning of flock?

noun

• A church congregation guided by a pastor.
• A group of birds.
• Often followed by `of'. ( a large number or amount or extent)
  • usage: "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "see the rest of the winners in our huge passel of photos"; "it must have cost plenty"; "a slew of journalists"; "a wad of money"
  • synonyms: batch, deal, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, mountain, muckle, passel, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, stack, tidy sum, wad
• An orderly crowd.
  • usage: "a troop of children"
  • synonyms: troop
• A group of sheep or goats.
  • synonyms: fold

verb

• Move as a crowd or in a group.
  • usage: "Tourists flocked to the shrine where the statue was said to have shed tears"
• Come together as in a cluster or flock.
  • usage: "The poets constellate in this town every summer"
  • synonyms: cluster, constellate, clump