noun
Refers to a motorcycle with an engine displacement of 250cc or greater, as defined in Japanese vehicle classification.
小型二輪免許を取るには教習所に通う必要がある。
To get a motorcycle license for bikes 250cc and above, you need to attend a driving school.
彼は小型二輪でツーリングに行くのが趣味だ。
His hobby is going touring on a motorcycle of 250cc or larger.