1. Grandmother: This is the most common meaning of "cucu" in Kikuyu. It is a term of respect and endearment used to address one's grandmother.
2. Cucumber: This is a less common meaning and refers to the vegetable cucumber. It's important to note that this meaning is not as widely used as the first one.
The context will usually make it clear which meaning is intended. For example, if someone is talking about their family, "cucu" will likely refer to their grandmother. If someone is talking about a meal, "cucu" might refer to a cucumber.