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hydra - definition and synonyms

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noun [countable]     hydra pronunciation in American English
/ˈhaɪdrə/
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singularhydra
pluralhydras or hydrae
  1. 2
    biology a very small water creature with a body shaped like a tube and a number of tentacles (=long thin parts) around its mouth
 
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a lifestyle focussing on simple pleasures such as comfort and cosiness in the home, and spending time with friends and family

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a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

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