championyoudaoicibaDictYouDict
champion: [13] Etymologically, a champion is someone who fought in the campus or arena. Latin campus (source of English camp) meant, among other things, ‘field of battle’ – both a fullscale military battlefield and an area for staged battles between gladiators. Those who fought in such battles – the gladiators – were called in medieval Latin campiones.

The word passed into English via Old French champion. The word’s original meaning survives historically in such phrases as ‘king’s champion’, someone who will fight on behalf of the king, and by extension in ‘supporter’, as in ‘a champion of prisoners’ rights’. The modern sense ‘winner’ did not develop until the early 19th century. The abbreviated form champ is 19th-century American.

An alternative and now obsolete form of the word is campion, from Old Northern French, and it has been speculated that this is the origin of the plant-name campion [16], on the basis that it was used to make garlands for fighters.
=> camp, campion, champagne, champion
battle (n.)youdaoicibaDictYouDict
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.)). Phrase battle royal "fight involving several combatants" is from 1670s.
defenestration (n.)youdaoicibaDictYouDict
1620, "the action of throwing out of a window," from Latin fenestra "window" (see fenestration). A word invented for one incident: the "Defenestration of Prague," May 21, 1618, when two Catholic deputies to the Bohemian national assembly and a secretary were tossed out the window (into a moat) of the castle of Hradshin by Protestant radicals. It marked the start of the Thirty Years War. Some linguists link fenestra with Greek verb phainein "to show;" others see in it an Etruscan borrowing, based on the suffix -(s)tra, as in Latin loan-words aplustre "the carved stern of a ship with its ornaments," genista "the plant broom," lanista "trainer of gladiators." Related: Defenestrate (1915); defenestrated (1620).
miscellany (n.)youdaoicibaDictYouDict
"a mixture, medley," 1590s, from Latin miscellanea "a writing on miscellaneous subjects," originally "meat hash, hodge-podge" (food for gladiators), neuter plural of miscellaneus (see miscellaneous).
morituri te salutantyoudaoicibaDictYouDict
Latin, literally "those about to die salute you," words addressed to emperor by gladiators upon entering the arena. Third person singular is moriturus te salutat, first person singular is moriturus te saluto.