Definition of mumblety-peg in US English:

mumblety-peg

(also mumbletypeg)

noun

US
  • A game in which each player in turn throws a knife or pointed stick from a series of positions, continuing until it fails to stick in the ground.

    • ‘I also remember taking our scout knives to school and playing mumblety-peg at recess with other eight and nine year old boys.’
    • ‘Some of the sailors played mumblety-peg with their knives (or knives they'd taken from Batcha's kitchen - it angered him so) or played duck and drake with small ice-cold stones they could find beneath the snow.’
    • ‘For those who have never heard of it, you play mumblety-peg by balancing the tip of your jack-knife on your palm, or index finger, or other appendage, and then flipping it in such a way that it sticks in the ground.’
    • ‘Kids played hopscotch and mumblety-peg in the dirt and built campfires in the summer, but Christmas was her favorite holiday when they cut down the tree and roasted goose for dinner.’

Origin

Early 17th century: also in the form mumble the peg, from mumble (sense 2 of the verb), from the requirement of the game that an unsuccessful player withdraw a peg from the ground using the mouth.

Pronunciation

mumblety-peg

/ˈməmb(ə)ltēˌpeɡ/