zero · number /ˈzɪr.oʊ/
A2 C or U the number 0
Five, four, three, two, one, zero.
Can you [bring] me my laptop, because I have to do [some] homework on it - if I don't do this I will [get] a zero. (Key English Test; A2; Portuguese)
B1 the temperature that is 32 degrees lower than the temperature at which water freezes in degrees Fahrenheit, or the temperature at which water freezes in degrees centigrade
In the winter, the temperature can drop to 15 degrees below zero.