Princeton's WordNet

1. battlefield, battleground, field of battle, field of honor, field(noun)

   a region where a battle is being (or has been) fought

   "they made a tour of Civil War battlefields"

Kernerman English Learner's Dictionary

1. battlefield(noun)ˈbæt lˌfild

   the place a battle is fought

   the battlefield at Gettysburg

2. battlefieldˈbæt lˌfild

   a place or area of knowledge in which there are arguments

   a legal battleground; the battleground states in the election

Wiktionary

1. battlefield(Noun)

   The field where a land battle is or was fought.

   1886 The night of the 16th of May found McPherson's command bivouacked from two to six miles west of the battlefield, along the line of the road to Vicksburg u2014 Ulysses S. Grant, Personal memoirs of U.S. Grant, Chapter 35.

• slagveldAfrikaans
• ساحَةُ قِتال، ميْدان مَعْرَكهArabic
• бойно полеBulgarian
• campo de batalhaPortuguese (BR)
• bojištěCzech
• das SchlachtfeldGerman
• slagmarkDanish
• πεδίο μάχηςGreek
• campo de batallaSpanish
• lahinguväliEstonian
• میدان نبردFarsi
• taistelukenttäFinnish
• champ de batailleFrench
• שְׂדֶה קְרַבHebrew
• रणभूमिHindi
• bojno poljeCroatian
• csatatérHungarian
• medan pertempuranIndonesian
• orrustu-/vígvöllurIcelandic
• campo di battagliaItalian
• 戦場Japanese
• 전쟁터Korean
• kovos laukasLithuanian
• kaujas lauksLatvian
• kawasam pertempuranMalay
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• pole walkiPolish
• میدان نبردPersian
• د جنگ ډگرPashto
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• câmp de luptăRomanian
• поле бояRussian
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• slagfältSwedish
• สนามรบThai
• savaş alanıTurkish
• 戰場Chinese (Trad.)
• поле боюUkrainian
• لڑائی کا میدانUrdu
• chiến trườngVietnamese
• 战场Chinese (Simp.)