What does 苦 mean?
苦 is a Japanese noun meaning “trouble, worry, difficulty” in English. It can also be translated as “phrase, verse (of 5 or 7 mora in Japanese poetry; of 4, 5, or 7 characters in Chinese poetry), haiku” depending on context. It is written as 苦 in kanji, く in hiragana, and ku in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
なんの苦もなくその場所を見つけた。
He had no difficulty in finding the place.