【正确答案】：
LINGUISTIC DICTIONARIES AIM AT DEFINING WORDS AND EXPLAINING THEIR USAGES IN THE LANGUAGE. THEY USUALLY COVER SUCH AREAS AS SPELLING, PRONUNCIATION, MEANING, GRAMMATICAL FUNCTION, USAGE AND ETYMOLOGY, ETC. THESE DICTIONARIES CAN BE MONOLINGUAL AND BILINGUAL.
【题目解析】：本题考查语言词典的概念。语言词典的目的是定义单词并解释其在语言中的用法。它们通常涉及拼写、发音、意义、语法功能、用法和词源学等领域，这些词典可以是单语的和双语的。