The function calculates the length of the given input string and returns the length as a word.

[CODE]:
```python
def english_length(word):
    num_words = {
        1: "two",
        2: "three",
        3: "four",
        4: "five",
        5: "six",
        6: "seven",
        7: "eight",
        8: "nine",
        9: "ten",
        10: "eleven",
        11: "twelve"
    }
    length = len(word)
    return num_words[length]

# Test
print(english_length("hello"))  # Should print "six"
```