Definitions:
push, fold, or turn (the edges or ends of something, especially a garment or bedclothes) so as to hide or secure them

make a flattened, stitched fold in (a garment or material), typically so as to shorten or tighten it, or for decoration

a flattened, stitched fold in a garment or material, typically one of several parallel folds put in a garment for shortening, tightening, or decoration

food eaten by children at school as a snack

(in diving, gymnastics, downhill skiing, etc.) a position with the knees bent and held close to the chest, often with the hands clasped round the shins