Here are some possibilities:
* Misspelling: It could be a misspelling of "columns" or "columniums."
* Made-up Word: It could be a word invented for a specific purpose, like a fictional story or game.
* Slang: It might be slang used in a particular community or region, but without further context, it's impossible to know its meaning.
To understand the meaning of "colundrums," you need more information. Please provide context, such as:
* Where did you encounter this word? (Book, article, conversation, etc.)
* What was the surrounding text?
* What was the intended meaning of the word?
With more information, I can help you understand what "colundrums" might mean.