Definition of Y-fronts in English:

Y-fronts

plural noun

British
trademark
  • Men's or boys' underpants with a branching seam at the front in the shape of an upside-down Y.

    • ‘He's over in the kitchen area, wearing nothing but his hat and a baggy pair of Y-fronts.’
    • ‘Good news: Y-fronts are back - only now they are called hip-briefs.’
    • ‘So what if he is pictured on his hotel balcony in his Y-fronts?’
    • ‘Every man and his brother buys their Y-fronts at this shop.’
    • ‘They'll be donning capes and Y-fronts over their trousers.’

Pronunciation:

Y-fronts

/ˈwʌɪfrʌnts/