Definition of racerback in English:

racerback

noun

  • [as modifier] Denoting an article of clothing with a T-shaped back behind the shoulder blades to allow ease of movement in sports.

    • ‘Some dancers make their own alterations to make their leotard more appealing - cut the back, pinch the neckline, turn tanks into racerbacks, and even use dye to get the perfect color.’
    • ‘Also, consider racerback tops with a high Lycra content, as they are the most comfortable and supportive for larger bust sizes.’
    • ‘Larger breasted women usually prefer racerbacks or T-backs because they offer more support.’

Pronunciation:

racerback

/ˈrāsərˌbak/