This is the 7549th most frequent Chinese word.
词典
Dictionary.
In this sentence, '词典' refers to a physical dictionary as a tool for looking up definitions.
我正在用这本词典查找一个单词。
I am using this dictionary to look up a word.
Here, '词典' metaphorically represents a collection of terms and meanings that the person is familiar with.
他的词典知识非常丰富，能解释很多词语。
His knowledge of dictionaries is very extensive; he can explain many terms.
In this example, '词典' specifies an electronic dictionary, emphasizing its functional aspect in translation and language assistance.