What does 切り札 mean?
切り札 is a Japanese noun meaning “trump; trump card” in English. It can also be translated as “ace up one's sleeve” depending on context. It is written as 切り札 in kanji, きりふだ in hiragana, and kirifuda in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
あの会社の社長は切り札を隠し持っています。
The president of that company has an ace up her sleeve.