What is the meaning of kikuyu word ndigithu?

The Kikuyu word "ndigithu" doesn't exist as a single word in the Kikuyu language. It is likely a misspelling or a combination of words.

Here are some possible interpretations based on similar Kikuyu words:

1. "Ndigĩthũ" (pronounced: N-dee-gee-thoo): This word is closest to the spelling you provided. It means "it is mine" or "I own it." This is a possessive form of the pronoun "ngũ" (I) and the noun class 7 marker "-thũ."

2. "Ndigĩ thũ" (pronounced: N-dee-gee th-oo): This is a combination of the word "ndigĩ" (I am) and "thũ" (we), which could translate to "I am us" or "I belong to us." However, this is not a standard phrase and would be considered grammatically incorrect.

3. "Ndĩgĩthũ" (pronounced: N-dee-gee-thoo): This is a possible variation of "ndigĩthũ" and could potentially mean the same thing, "it is mine."

Without more context, it's difficult to determine the precise meaning of "ndigithu."

If you can provide the sentence or context where you encountered this word, I might be able to give you a more accurate translation.