Definition of thinko in English:

thinko

nounthinkos

informal
  • A mistake in one's thought processes; a mental lapse or failure to reason correctly.

    ‘The problem, I began to suspect, was not a typo but a thinko.’

Origin

1990s formed on the pattern of typo.

Pronunciation

thinko

/ˈθɪŋkəʊ/