booster pack

• enPR: bo͞o′stər păk′
• (Received Pronunciation, contemporary) IPA^(key): /ˈbuː.stə ˌpak/

  (Received Pronunciation, conservative) IPA^(key): /ˈbuː.stə ˌpæk/

• (General American, Canada) IPA^(key): /ˈbu.stəɹ ˌpæk/
• (General Australian) IPA^(key): /ˈbʉː.stə ˌpæk/
• (New Zealand) IPA^(key): /ˈbʉː.stə ˌpɛk/, /ˈbʉː.stɐ ˌpɛk/, /ˈbʉː.sta ˌpɛk/
• (Scotland) IPA^(key): /ˈbʉ.stəɹ ˌpak/
• (India) IPA^(key): /ˈbuː.sʈəʳ ˌpak/
• Hyphenation: boost‧er pack

booster pack (plural booster packs)

2. (card games) An expansion deck of a trading card game.

• “booster pack”, in OneLook Dictionary Search.