noun
A type of tight-fitting legwear, originally from the German brand Trencker. In Japanese, トレンカ typically refers to leggings with a stirrup or foot strap.
冬はトレンカをはくと暖かい。
Wearing leggings keeps you warm in winter.
彼女はヨガのときにトレンカを履いている。
She wears leggings when doing yoga.