Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An instrument for signalling by reflecting the rays of the sun in different directions.

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for signaling by reflecting the rays of the sun in different directions.

from The Century Dictionary and Cyclopedia

  • n. Milit., an adaptation of the heliotrope to the purpose of transmitting military signals in the day-time by means of the number and the grouping of the flashes.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek sign + to turn.

Examples

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