Definition of cooter in US English:

cooter

noun

  • A North American river turtle with a dull brown shell and typically having yellow stripes on the head.

    Genus Pseudemys, family Emydidae: several species, in particular P. concinna, some races of which are known as sliders

    • ‘Near the bank a large basking turtle - possibly a Suwannee cooter - splashes from a snag, giving me only a glimpse of its carapace as it sinks into the tannin-stained flow.’

Origin

Early 19th century: of unknown origin.

Pronunciation

cooter

/ˈko͞odər/