Yearn v. t. : To pain; to grieve; to vex.

Yearn v. i. : To be pained or distressed; to grieve; to mourn.

Yearn v. i. & t. : To curdle, as milk.

Yearn v. i. : To be filled with longing desire; to be harassed or rendered uneasy with longing, or feeling the want of a thing; to strain with emotions of affection or tenderness; to long; to be eager.

Example:
What is it that people Yearn for? What is it that your heart desires?

Taxonomy
Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, Middle English, Old English, glossary, english, language, ESL, Search, rn, intransitive verb, Etymology, Old High German, desire, Latin.

Defination from the web:
yearn from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... 1 : to long persistently, wistfully, or sadly <yearns to make a difference> 2 : to feel tenderness or compassion. synonyms see long. — yearn·er noun ...