half step
noun
Music.
semitone.
Military.
a step 15 inches (38 cm) long in quick time and 18 inches (46 cm) long in double time.
Origin of half step
First recorded in 1900–05
Words nearby half step
half sister,
half size,
half snipe,
half sole,
half sovereign,
half step,
half story,
half term,
half the battle,
half tide,
half tiger