ブロックサイン

noun

block sign; signal

In baseball, a hand signal or sign used between players or coaches, often to communicate strategy. Wasei-eigo from English 'block sign'.

wasei-eigo (Japanese-coined English), from block sign

• キャッチャーがピッチャーにブロックサインを送おくる。

  The catcher sends a block sign to the pitcher.