Definition of heading knife in US English:

heading knife

noun

  • 1Any of various kinds of knife used by coopers, saddlers, curriers, etc., for making or fitting a head for an object.

  • 2A knife used to cut off the head of something, especially a fish.

Origin

Late 16th century; earliest use found in James Rogers (1823–1890), political economist and politician. From heading + knife.

Pronunciation

heading knife

/ˈhɛdɪŋ nʌɪf/