Definitions

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

  • n. A solid, toxic, selective herbicide, C9H7O3Cl3, used primarily against woody plants.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a herbicide that is effective in controlling woody plants but is toxic to animals

Etymologies

Probably Latin silva, forest + ex(terminator).
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

  • The naked emotion in his silvex-blue eyes told her the truth of his words.

    Only You

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