According to African Languages - Swahili online dictionary, YES! And most of the uses of the term "shamba" that I ever heard in Kenya referred to a field or fields, or even a garden of produce by a city house. Of course, it did also refer to someone's farm, if they had a farm.
In common with many languages across Africa the (the definite article) and a / an (the indefinite article) do not exist in Swahili. Thus , according to context, kitabu is 'a book', or 'the book'. When necessary 'one book' can be signified by using -moja thus kitabu kimoja. 'The' can be indicated by using 'this', 'that' kitabu hiki kitabu kile