also: ライトウエルターきゅう
noun
light welterweight (boxing)
A weight class in boxing, between lightweight and welterweight. The term is used in Japanese boxing contexts.
彼はライトウェルター級のチャンピオンだ。
He is the light welterweight champion.
ライト級 is the lightweight class, one step below ライトウェルター級.
Loanword from English 'light welterweight' combined with the Japanese suffix 級 (class).