What does "petrissage" mean?

A form of massage involving kneading or wringing the skin with one's fingers, knuckles and thumbs.

Petrissage

noun

noun ·Rare ·Advanced level

Noun

1
A form of massage involving kneading or wringing the skin with one's fingers, knuckles and thumbs.
2
massage of the skin which is gently lifted and squeezed wordnet

From French pétrir (“to knead”).