The reference from dictionary would help Gentry understand the description of the athlete.
A dictionary can be described as either an electronic or book resource that shows the meaning of all the words present in a language in alphabetical order.
In the scenario mentioned in the question, in order for Gentry to understand about the word pugnacious for her report, she should use a dictionary. A dictionary will give her a description of the meaning of this word.
In an English dictionary, you will find the meaning of pugnacious to be someone who argues a lot or is aggressive.
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