Ripen has 3 different meanings across 1 category:
Verb
cause to ripen or develop fully
"The sun ripens the fruit"
"Age matures a good wine"
grow ripe
"The plums ripen in July"
to grow ripe; to become mature (said of grain, fruit, flowers etc.)
Ripen comes from Old English rīpian, meaning "to become ripe." In modern usage, it combines the word for ripe with a suffix that indicates the process of becoming.