bashment in English dictionary bashment Meanings and definitions of "bashment" (slang, countable, especially Jamaican) A party or rave. (slang, uncountable, music, especially Jamaican) Dancehall music. noun (slang, countable, especially Jamaican) A party or rave. noun (slang, uncountable, music, especially Jamaican) Dancehall music. more Grammar and declension of bashment bashment ( countable and uncountable; plural bashments) bashment (countable and uncountable, plural bashments) more Sample sentences with "bashment" Declension Stem Try again Authors