Definition of bog noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//bɒɡ//
    ; NAmE NAmE//bɑːɡ//
    , NAmE//bɔːɡ//
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  1. 1[countable, uncountable] (an area of) wet soft ground, formed of decaying plants a peat bog see also boggy
  2. 2[countable] (British English, slang) a toilet/bathroom Have you got any bog roll (= toilet paper)? Sam was on the bog when I arrived.
  3. Word OriginMiddle English: from Irish or Scottish Gaelic bogach, from bog ‘soft’.Extra examples I found myself walking through a bog. The more she struggled the deeper she sank into the bog. Like oil, gas and coal fields, peat bogs act as vast carbon stores. There was an area of bog behind the house. We collected several interesting specimens from the bog.
See the Oxford Advanced American Dictionary entry: bog