free fall is a noun meaning "the ideal falling motion of something subject only to a gravitational field". It carries 2 recorded senses.
the ideal falling motion of something subject only to a gravitational field
a sudden sharp decrease in some quantity
“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”
Definitions, synonyms and semantic relations for free fall come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.