(Originally) a boot worn for playing baseball (now rare); (in later use) an ankle-high lace-up boot, typically made of canvas with a rubber sole, and worn as leisurewear.
Origin
Late 19th century; earliest use found in Springfield (Massachusetts) Republican.
Definition of baseball boot in US English:
baseball boot
noun
(Originally) a boot worn for playing baseball (now rare); (in later use) an ankle-high lace-up boot, typically made of canvas with a rubber sole, and worn as leisurewear.
Origin
Late 19th century; earliest use found in Springfield (Massachusetts) Republican.