Englishfor English speakers
a
Determinative
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A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
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A is the first letter of the alphabet.
The letter "a" comes before "b".
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In some schools, an A is a very high grade.
Ron got an A on his earth science test.
flock
Noun
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A flock is a large number of birds, especially those gathered together for the purpose of migration.
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A flock is a large number of animals, especially sheep or goats kept together.
flock
Verb
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If you flock to a place, you go towards a place in large numbers.
People flocked to the cinema to see the new film.
of
Preposition
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Made using.
It is a house of cards.
seagull
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noun
(= gull)
mostly white aquatic bird having long pointed wings and short legs