What does aponeurosis mean?
The definition of aponeurosis
Ap`o*neu*ro”sis, n.; pl. Aponeuroses.
Etym: [Gr. (Anat.)

Any one of the thicker and denser of the deep fasciæ which cover, invest, and the terminations and attachments of, many muscles. They often differ from tendons only in being flat and thin. See Fascia.