Noun
choko (plural choko)
A small handleless cup in which saké is served.
choko (plural chokos or chokoes)
(Australia, New Zealand) A chayote.
Sake is traditionally drunk from small cups called choko or o-choko (お猪口) and poured into the choko from ceramic flasks called tokkuri. Source: Internet
In the book, which features Oe’s recurring protagonist Kogito Choko, a novelist attempts to fictionalize his father’s death by drowning at sea. Source: Internet