What is the meaning of pitting in bengali?

Meaning(s):

1. a sizeable hole (usually in the ground)
2. a concavity in a surface (especially an anatomical depression)
3. the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed
4. a trap in the form of a concealed hole
5. a surface excavation for extracting stone or slate
6. lowered area in front of a stage where an orchestra accompanies the performers
7. a workplace consisting of a coal mine plus all the buildingsand equipment connected with it
8. set into opposition or rivalry
9. mark with a scar
10. remove the pits from
11. असमतलता The formation of small pits in a surface as a consequence of corrosion