Synonym: bunch, crowd, group, mob, multitude, pack, throng. Similar words: lock, block, o'clock, locker, lock out, padlock, blocked, deadlock. Meaning: [flɑk /flɒk] 
n. 1. a church congregation guided by a pastor 2. a group of birds 3. (often followed by `of') a large number or amount or extent 4. an orderly crowd 5. a group of sheep or goats. v. 1. move as a crowd or in a group 2. come together as in a cluster or flock.
n. 1. a church congregation guided by a pastor 2. a group of birds 3. (often followed by `of') a large number or amount or extent 4. an orderly crowd 5. a group of sheep or goats. v. 1. move as a crowd or in a group 2. come together as in a cluster or flock. 
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1. Birds of a feather flock together. 
2. Eagles fly alone, but sheep flock together.
3. One scabbed sheep will mar a whole flock.
4. There is a black sheep in every flock.
5. It is a small flock that has not a black sheep.
6. We saw a flock of geese in the lake.
7. A flock of wild geese flew overhead.
8. He keeps a flock of sheep.
9. They kept a small flock of sheep.
10. The shepherd re-collected his flock and went down the hillside.
11. A flock of birds comes over, and the hunting starts.
12. A flock of sheep blocked our entry to the village.
13. The shepherd is bringing his flock down from the hills.
14. A flock of geese flew overhead.
14. Sentencedict.com try its best to collect and build good sentences.
15. A flock of sheep are ranging over the grassland.
16. They raised a flock of sheep.
17. The shepherd tended a flock.
18. The priest warned his flock against breaking God's law.
19. Every summer thousands of people flock to the countryside.
20. A flock of crows wheeled overhead.
21. A noisy flock of tourists came into the building.
22. "Flock" is a collective noun.
23. A flock of geese perked down the roadway.
24. We watched a flock of birds fly over the field.
25. Thousands of day trippers flock to resorts on the south coast.
26. In the summer,(sentencedict.com) tourists flock to the museums and art galleries.
27. A flock of birds was already warbling a cheerful morning chorus.
28. His greatest wish must be that huge crowds flock into the beautiful park.
29. The explosion scattered a flock of birds roosting in the trees.
30. The noise of the car startled the birds and the whole flock flew up into the air.