小牛 (xiǎo niú) is the Chinese word for "calf." In Engpsh, a calf is a young cow or bull, usually less than a year old. The word "calf" is typically written as "calf," but it can also be written as "Calf" or "CALF" depending on the context and the writing style being used.

Here is how you can use the word "calf" in a sentence:

The farmer was feeding the calf a bottle of warm milk.
The calf was wobbly on its new legs, but it was quickly learning to walk.
The herd of cows was grazing in the field, and a few calves could be seen playing nearby.