the front part of the foot from the ankle to the tips of the toes; the toes or toe tips.
冬は足先が冷えやすいので厚手の靴下を履いた。
In winter my toes get cold easily, so I wore thick socks.
彼の靴は古くて、足先が破れている。
His shoes are old and the toe area is torn.
バレエでは足先まで美しく伸ばすことが求められる。
In ballet you are required to extend beautifully all the way to the tips of your toes.