Definition of mutt-eye in US English:

mutt-eye

noun

Australian
slang
  • Cut corn.

Origin

1940s; earliest use found in Kylie Tennant (1912–1988), novelist and playwright. Apparently from mutt + eye, although the reason for the name is unknown; compare similar collocations in quot. 1966.

Pronunciation

mutt-eye

/ˈmʌtʌɪ/