Definition of neckful in US English:

neckful

noun

informal
  • 1A quantity that fills the neck; as much as the neck will hold.

  • 2As much (punishment, annoyance, irritation, etc.) as one can endure.

Origin

Mid 19th century; earliest use found in The Quarterly Review. From neck + -ful.

Pronunciation

neckful

/ˈnɛkfʊl/