noun Date: 1904 a walking step of 15 inches or in double time of 18 inches, a musical interval (as E-F or B-C) equivalent to 1/12 of an octave
HALF STEP
Meaning of HALF STEP in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012