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English to English noun
| 1 |
the ideal falling motion of something subject only to a gravitational field |  | source: wordnet30
| 2 |
a sudden sharp decrease in some quantity | | Example: a drop of 57 points on the Dow Jones index
there was a drop in pressure in the pulmonary artery
a dip in prices
when that became known the price of their stock went into free fall
source: wordnet30
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