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Noun heliograph has 1 sense
  1. heliograph - an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on
    --1 is a kind of     apparatus, setup
    Derived form: verb heliograph1
,Verb heliograph has 1 sense
  1. heliograph - signal by means of a mirror and the using the sun's rays
    --1 is one way to     sign, signal, signalize, signalise
    Derived form: noun heliograph1
    Sample sentences:
    Somebody ----s something
    Somebody ----s that CLAUSE
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