A basket or hamper used to carry or store things (shopping basket, laundry hamper, birdcage etc.).
買い物かごを持ってスーパーへ行った。
I took a shopping basket and went to the supermarket.
洗濯物をかごに入れて二階へ運んだ。
I put the laundry in the basket and carried it upstairs.
ベランダに鳥かごを吊るしている。
There's a birdcage hanging on the balcony.