Here are some possibilities considering what it could be:
* "Theyam": This word refers to a type of traditional performing art in Kerala, similar to a play or dance drama. It's often religious in nature, and involves elaborate costumes and masks.
* "Theeyam": This might be a variation of "Theyam" with a different pronunciation.
* A combination of words: It's possible "Theymanam" is a combination of two words, which might be difficult to understand without context.
Could you please provide more context or the full sentence where you encountered this word? This would help me determine the correct meaning.