二足
に
そ
く
Meanings
1
noun, noun which may take the genitive case particle 'no'
two legs; two feet
Used for counting limbs or feet of living creatures, or for bipedal things.
Humans walk on two legs.
They are developing a bipedal robot.
2
noun, noun which may take the genitive case particle 'no'
two pairs (of footwear)
Used when counting pairs of shoes, socks, etc. The counter 足 (そく) is for footwear.
I bought two pairs of shoes.
At this store, the second pair is half price.