Definition of semmit in English:

semmit

noun

Scottish
  • An undershirt; a vest.

    • ‘The man who is too sexy for his semmit has been under attack of late.’
    • ‘Wearing semmits and hard hats they climbed through young trees to an open slope.’
    • ‘The fashion of racing up the pitch with the jersey pulled over the face to reveal the sports semmit has been rife these last two or three seasons.’

Origin

Late Middle English: of unknown origin.

Pronunciation:

semmit

/ˈsɛmɪt/