Definition of sun helmet in English:

sun helmet

Line breaks: sun hel¦met

Entry from British & World English dictionary

noun

chiefly • historical
  • A rigid hat made of cork or a similar material, worn in tropical climates.

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Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space