consonant - definition and synonyms

noun [countable] 

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  1. 1
    linguistics a speech sound made by stopping all or some of the air going out of your mouth
  2. 2
    a letter of the alphabet used as a symbol for a consonant. All the letters of the English alphabet are consonants except for ‘a’, ‘e’, ‘i’, ‘o’, and ‘u’, which are vowels.