ac ‧ com ‧ pa ‧ nist /əˈkʌmp ə nəst, əˈkʌmp ə nɪst/ BrE AmE noun [countable]
someone who plays a musical instrument while another person sings or plays the main tune
ac ‧ com ‧ pa ‧ nist /əˈkʌmp ə nəst, əˈkʌmp ə nɪst/ BrE AmE noun [countable]
someone who plays a musical instrument while another person sings or plays the main tune
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012