play, amuse oneself, enjoy oneself / spend one's time idle, do nothing / for an item not to be in use, be spare or idle

catch, playing catch

to play catch

a younger sibling

one’s own younger brother / a younger male / (Kagoshima) younger brother

younger brother / younger male

(collective) elder sister and younger brother

Rare spelling of 兄弟 (“siblings”, literally “elder brother and younger brother”).

(archaic) a noblewoman who is younger sister to another one in her family

Rare spelling of 乙姫.