definition of
encroachment

[1] #1 encroachment n. [invasion, intrusion] any entry into an area not previously occupied; "an invasion of tourists"; "an invasion of locusts". wn

[2] #2 encroachment n. [trespass, violation, intrusion, usurpation] entry to another's property without right or permission. wn

[3] #3 encroachment n. [impingement, impact] influencing strongly; "they resented the impingement of American values on European culture". wn