second base meaning
EN- NounSUF-ase
- (baseball) The base opposite home plate in a baseball infield.
- The runner slid into second base with a double.
- (colloquial) Touching a woman's breast.
- (baseball) The base opposite home plate in a baseball infield.
Definition of second base in English Dictionary
- Part-of-Speech Hierarchy
- Nouns
- Singularia tantum
- Singularia tantum
- Nouns
Source: Wiktionary
Grammatically, this idiom "second base" is a noun, more specifically, a singularia tantum.