noun
fashionable person; dandy; flashy dresser
Refers to someone who dresses up stylishly or flashily, often with a slightly showy or affected nuance. Can be used for both men and women, though めかし込む and related words often imply careful grooming.
彼はパーティーに行くときはいつもめかし屋だ。
He's always a flashy dresser when he goes to parties.
あのめかし屋は毎日違うスーツを着ている。
That dandy wears a different suit every day.
おしゃれ is a general term for stylishness or a stylish person, while めかし屋 emphasizes dressing up in a showy or affected manner.
伊達男 is a more literary term for a dandy or a man who is stylish in a refined, sometimes old-fashioned way.
Compound of めかし (the stem of めかす, 'to dress up') and 屋 (a suffix for a person characterized by something). The exact origin of めかす is uncertain, but it is related to めく (to show signs of).