"fight or hostile engagement between opposing forces," c. 1300, from Old French bataille "battle, single combat," also "inner turmoil, harsh circumstances; army, body of soldiers," from Late Latin battualia "exercise of soldiers and gladiators in fighting and fencing," from Latin battuere "to beat, to strike" (see batter (v.)).
Battle-cry is from 1812; battle-flagfrom 1840; battle-scarred is from 1848. Phrase battle royal "fight involving several combatants" is from 1670s.
"to furnish with battens," 1775, from batten (n.) "strip of wood, bar nailed across parallel boards to hold them together." Nautical phrase batten down "cover (hatches) with tarpaulin and nail it down with battens to make it secure" is recorded from 1821. Related: Battened; battening.