on base

on base

1. (baseball) Having reached a base in an inning.

   One run, two hits, one walk, no errors; two left on base.

2. Located within the premises of a military base.
3. (aviation) Flying the base leg of an approach.

   The Piper was on base for a landing on runway 9.

• on-base percentage

• Beason, base on, beanos