English: what does rankle mean?

Tutoring English, vocabulary is always interesting. The tutor mentions rankle.

rankle (verb):
to irritate or cause resentment, perhaps continually.
Her older sister’s privileges rankled her.

Source:

Mish, Frederick C. (editor). The Merriam-Webster Dictionary. Springfield: Merriam-Webster, 2004.

Barber, Katherine et al. (editors). The Oxford Canadian Dictionary of Current English. Don Mills: Oxford University Press, 2005.

Gilmour, Lorna (editor). Collins Essential Canadian English Dictionary and Thesaurus. Glasgow: HarperCollins, 2006.