to know sth by heart; to know sth inside out; lit. ripe as a melon that rolls from its vine (idiom); fig. to know fluently
形容读书、背书流利纯熟。
偏正式；作补语、定语、状语；含褒义
象从瓜蔓上掉下来的瓜那样熟。形容读书或背书流利纯熟。
清·吴敬梓《儒林外史》第十一回：“十一二岁就讲书、读文章，先把一部王守溪的稿子读的滚瓜烂熟。”
曹寅从小对唐诗就背得滚瓜烂熟。 ◎端木蕻良《曹雪芹》四