English noun: heliograph | |||
1. | heliograph (artifact) an apparatus for sending telegraphic messages by using a mirror to turn the sun's rays off and on | ||
Broader (hypernym) | apparatus, setup | ||
English verb: heliograph | |||
1. | heliograph (communication) signal by means of a mirror and the using the sun's rays | ||
Pattern of use | Somebody ----s something. Somebody ----s that CLAUSE | ||
Broader (hypernym) | sign, signal, signalise, signalize | ||