noun
first baseman's mitt
Baseball term for the large, padded glove worn by the first baseman. Wasei-eigo from English 'first mitt'.
wasei-eigo (Japanese-coined English), from first mitt
彼は新しいファーストミットを買った。
He bought a new first baseman's mitt.
ファーストミットは普通のグローブ
A first baseman's mitt is larger than a regular glove.