Character Dictionary
Kanji Dictionary
noun
Letter rules can be found in a character dictionary. In Japanese, one kanji "letter" or "character" can hold a lot of information, so you have dictionaries dedicated to kanji meanings. That's what this is.
This word is a little old-fashioned these days, so you might also see 漢字辞典 used for a character dictionary. (You'll learn 辞典 soon, if you haven't already!)
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
英和字典
English-Japanese dictionary
漢和字典
kanji and kanji compound dictionary with Japanese definitions
漢字字典
kanji dictionary
え、明日のテスト、字典使ってOKなの?
Oh, are dictionaries OK for tomorrow's test?
私は古代文字字典を読むのが大好きです。
I love reading ancient character dictionaries.
この国字字典はあそこの古本屋で買ったんです。
I bought this Japanese-origin kanji dictionary at that secondhand bookstore over there.