Answer:
The answer is indeed two definitions.
Step-by-step explanation:
In dictionaries, word entries have specific characteristics that help readers obtain as much information as possible about a word in a clear manner. Entries follow certain rules, which allows readers to use any dictionary without problems, knowing what they'll find and in what sequence. When the word is defined, the different definitions are marked by different numbers. Let's analyze the word entry provided in the question:
ret•ri•bu•tion (re-trə-ˈbyü-shən) n. 1: Something justly deserved; repayment. 2: Something given or demanded in reparation, especially punishment.
Notice how, after number 1, we have a semicolon separating "something justly deserved" and "repayment". That semicolon shows that both parts are actually the same definition being presented in different ways. However, as soon as the definition changes, a number 2 is place in front of it. The amount of numbers is, thus, the amount of definitions. In this case, we have two numbers, two definitions.