The noun flock has 5 senses (first 4 from tagged texts)
1. (2) flock -- (a church congregation guided by a pastor)
2. (2) flock -- (a group of birds)
3. (1) batch, deal, flock, good deal, great deal, hatful, heap, lot, mass, mess, mickle, mint, muckle, peck, pile, plenty, pot, quite a little, raft, sight, slew, spate, stack, tidy sum, wad, whole lot, whole slew -- ((often followed by `of') a large number or amount or extent; "a batch of letters"; "a deal of trouble"; "a lot of money"; "he made a mint on the stock market"; "it must have cost plenty")
4. (1) troop, flock -- (an orderly crowd; "a troop of children")
5. flock, fold -- (a group of sheep or goats)
Overview of verb flock
The verb flock has 2 senses (first 1 from tagged texts)
1. (2) flock -- (move as a crowd or in a group; "Tourists flocked to the shrine where the statue was said to have shed tears")
2. cluster, constellate, flock, clump -- (come together as in a cluster or flock; "The poets constellate in this town every summer")