Here are some common ones:
1. As a kanji character:
* 九 (kyū): This kanji represents the number nine.
* 区 (ku): This kanji means "district" or "ward" and is often used in place names, like "Tokyo-ku" (東京都区).
* 苦 (ku): This kanji means "bitter" or "suffering".
* 空 (kū): This kanji means "empty", "sky", or "void".
* 久 (kyū): This kanji means "long time", "ancient", or "long duration".
2. As a part of a word:
* 枯れる (kareru): This verb means "to wither", "to dry up", or "to die".
* 聞く (kiku): This verb means "to listen" or "to hear".
* 来る (kuru): This verb means "to come".
3. As a standalone word:
* "Ku" can be used as an informal way of saying "yes".
4. In Japanese onomatopoeia:
* "Ku" can represent sounds like a groan, a sigh, or a dull thud.
Without more context, it's impossible to know the specific meaning of "Ku".
Please provide more information about where you encountered this word. For example, what was the sentence or context where you saw it? This will help determine the correct meaning.