What does appease mean?
The definition of appease
Ap*pease”, v. t.
[imp. & p. p. Appealed; p. pr. & vb. n. Appeasing.]
Etym: [OE. apesen, apaisen, OF. apaisier, apaissier, F. apaiser, fr. a (L. ad) + OF. pais peace, F. paix, fr. L. pax, pacis. See Peace.]

To make quiet; to calm; to reduce to a state of peace; to still; to pacify; to dispel (anger or hatred); as, to appease the tumult of the ocean, or of the passions; to appease hunger or thirst.

Synonyms
— To pacify; quiet; conciliate; propitiate; assuage; compose; calm; allay; hush; soothe; tranquilize.