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

  • n. One that remains on the sidelines; a nonparticipant.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One who stays on the sidelines; a spectator or nonparticipant.
  • n. A beekeeper, neither a hobbyist nor a fully-fledged commercial operator, for whom beekeeping is a secondary source of income.

from The Century Dictionary and Cyclopedia

  • n. A sidewinder, sidewiper, or massasauga.


sideline +‎ -er (Wiktionary)



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