noun, Astronomy. 1. the major axis of an elliptical orbit.
noun, Military, Navy. 1. a line formed by troops or ships for delivering or receiving an attack. noun 1. a formation adopted by a military or naval force when preparing for action
- Line-of-battle ship
[lahyn-uh v-bat-l] noun 1. .
noun 1. (def 2). noun 1. (US & Canadian) another name for credit line