Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A work raised in the middle of a wide ditch, to defend it.

from the GNU version of the Collaborative International Dictionary of English

  • n. A work raised in the middle of a wide ditch, to defend it.

from The Century Dictionary and Cyclopedia

  • n. In fortification, a work raised in the middle of a ditch, to defend it when it is too wide: frequently called an envelop.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

French sillon ("furrow").

Examples

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