Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An upward swing or trend.
  • n. An increase, as in movement or business activity.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. an upward swing
  • n. an upward trend or an increase in activity

Etymologies

up- +‎ swing (Wiktionary)

Examples

Comments

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