Princeton's WordNet

1. knock out(verb)

   eliminate

   "knock out a target"

2. knock cold, knock out, kayo(verb)

   knock unconscious or senseless

   "the boxing champion knocked out his opponent in a few seconds"

3. knock out(verb)

   destroy or break forcefully

   "The windows were knocked out"

4. knock out(verb)

   overwhelm with admiration

   "All the guys were knocked out by her charm"

5. knock out(verb)

   empty (as of tobacco) by knocking out

   "knocked out a pipe"

Kernerman English Learner's Dictionary

1. knock out(verb)ˈɑɑk

   to cause to become unconscious

   a powerful drug that knocked him out

2. knock outˈɑɑk

   to beat and eliminate from a competition

   He was knocked out in the second round of the tournament.

Wiktionary

1. knock out(Verb)

   To strike or bump (someone or something) out.

2. knock out(Verb)

   To render unconscious, as by a blow to the head.

3. knock out(Verb)

   To put to sleep.

4. knock out(Verb)

   To exhaust.

5. knock out(Verb)

   To complete, especially in haste; knock off.

6. knock out(Verb)

   To cause a mechanism to become non-functional by damaging or destroying it.

7. knock out(Verb)

   To eliminate.

• uitslaanAfrikaans
• يَصْرَعArabic
• нокаутирамBulgarian
• nocautearPortuguese (BR)
• knokautovatCzech
• k.o. schlagenGerman
• slå ud; slå i gulvetDanish
• ρίχνω κπ. αναίσθητο με χτύπημαGreek
• dejar sin conocimientoSpanish
• oimetuks löömaEstonian
• ضربه فنی کردنFarsi
• tyrmätäFinnish
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• अचेत करने या पछाड़ देने वाला प्रहारHindi
• onesvijestitiCroatian
• kiütHungarian
• memukul pingsanIndonesian
• rotaIcelandic
• mettere k.o.Italian
• ノックアウトするJapanese
• (권투) 녹아웃시키다Korean
• nokautuotiLithuanian
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• menumbangkanMalay
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• فنى ګوزار وركول د لوبو په مسابقه كښىPashto
• pôr nocautePortuguese
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• مار کر بیہوش کر دینا ؛ مکّے بازی کا مقابلہ جیت لیناUrdu
• hạ đo vánVietnamese
• 打昏Chinese (Simp.)