Englishfor English speakers
aligned
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adjective
in a straight line
pearly teeth evenly aligned
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adjective
brought into agreement or cooperation on the side of a faction, party, or cause
cavity
Noun
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A cavity is a hole or hollow area.
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A cavity is a hollow area inside the body (like the sinuses).
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A cavity is a hole in a decayed tooth.
You have a cavity in your back teeth.