tips of the toes; front part of the foot
Refers to the part of the foot from the ankle forward, including the toes. Often used when describing foot position, coldness, or movement.
My toes are so cold I can't sleep.
In ballet, it's important to point your toes firmly.
Compound of 足 (あし, foot) and 先 (さき, tip, front). The reading is a straightforward combination of the kun'yomi readings of the two kanji.