First base
Reference
Definition
“First base” is a US colloquial expression for kissing as the first phase of a sexual relationship.
Quick Facts
| Term | First base |
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What does “first base” mean?
In dating and sexual slang, getting to first base means kissing someone. The phrase presents kissing as the first phase of a sexual relationship.
Other meaning
Outside sexual slang, “first base” can refer to the baseball base after home plate on a counter-clockwise path around the infield.