Quick definitions from WordNet (leach)

▸ noun:  the process of leaching
▸ verb:  permeate or penetrate gradually ("The fertilizer leached into the ground")
▸ verb:  cause (a liquid) to leach or percolate
▸ verb:  remove substances from by a percolating liquid ("Leach the soil")
▸ name:  A surname (common: 1 in 5882 families; popularity rank in the U.S.: #686)

---

▸ Also see leach