Oxford Dictionary English

    submarine

    noun
    noun
    BrE BrE//ˌsʌbməˈriːn//
    ; NAmE NAmE//ˌsʌbməˈriːn//
    ; BrE BrE//ˈsʌbməriːn//
    ; NAmE NAmE//ˈsʌbməriːn//
    (informal sub) Types of boats and ships
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  1. 1 a ship that can travel underwater a nuclear submarine a submarine base submarines carrying nuclear warheads the problem of submarines operating too close to fishing vessels Wordfindernavyadmiral, aircraft carrier, base, captain, command, fleet, navy, submarine, torpedo, warship Oxford Collocations Dictionary adjectiveconventional, atomic, ballistic-missile, … submarine + verbdive, sink, surface, … submarine + nouncaptain, commander, crew, … See full entry See related entries: Types of boats and ships
  2. 2 (also submarine sandwich, hero) (all North American English) a long bread roll split open along its length and filled with various types of food
See submarine in the Oxford Advanced American Dictionary
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