Englishfor English speakers
hollow
Adjective
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If something has nothing inside of it, it is hollow.
The box is hollow.
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If the inside of a tree or log has rotted away so the middle is empty, it is hollow.
The rabbit ran through the hollow log.
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Lacking enthusiasm or cheer
"He let out a hollow laugh"
of
Preposition
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Made using.
It is a house of cards.
the
Determiner
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Used, instead of a, to reference something specific, already known to exist.
Compare "I read a book." and "I read the book."
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Used with a stress, to show that the word following is special.
Are you the John Smith that I went to school with?
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Used with an adjective that acts like a noun to mean all of the people concerned
The poor are always with us.
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Used with superlatives forms of adjectives and adverbs.
You are the best.
sacrum
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noun
wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx