Definition of fleek in English:

fleek

adjective

US
informal
  • Extremely good, attractive, or stylish.

    ‘my hair is on fleek right now’
    ‘OMG the music is on fleek’
    ‘have you ever seen anything so fleek in your life?’
    • ‘Camila's eyebrows were on fleek on the red carpet.’
    • ‘Emma's wardrobe has been on fleek the whole time she has been presenting for the show.’
    • ‘My hair is totally fleek today. This wind hasn't touched it.’
    • ‘Make sure your eyebrows are in shape by checking out the 26 chicest and fleekest brows on Instagram.’
    • ‘I'm over here all red-faced and sweating, while Anderson's ponytail and makeup are on fleek.’
    • ‘The double char-broiled bacon burger, hot dog, and Italian beef are on fleek.’

Origin

Early 21st century: apparently an arbitrary formation; popularized in a 2014 video post on the social media service Vine by Kayla Newman (‘Peaches Monroee’).

Pronunciation:

fleek

/fliːk/