Word book,word book是什么意思

[现货]英文原版 my first word book board book 我的第一本单词书
(英文原版)best little word book ever斯凯瑞金色童书-最好的单
【英文原版 national geographic little kids word book 图片词典
jack and annie's story word book
my first spanish word book(my first books)