Definition of nightingale floor in English:

nightingale floor

noun

  • In Japan: a wooden floor, originally constructed in medieval times to warn of intruders, which when walked on emits a chirruping sound likened to a bird call.

Origin

Early 20th century. From nightingale + floor, after Japanese uguisu-bari from uguisu + -bari, combining form of hari, nominalized stem of haru to stretch, lay (floorboards).

Pronunciation

nightingale floor

/ˌnʌɪtɪŋɡeɪl ˈflɔː/