overfold
/ˈəʊvəfəʊld/noun
1- a part of something which is folded over another part褶子：
the tunic is belted over a long overfold.
束腰上衣在腰间长褶处有腰带束着。
1.1
- Geology a fold in which both the limbs dip in the same direction so that strata in the middle part are upside down【地质】倒转褶皱, 倒转褶曲。