PSE: Pidgin Signed English
Note: ASL linguistics now use the term "Contact Signing"
rather than PSE. The reason for this is that "contact signing"
doesn't quite seem to fit the commonly held definition (or conventions)
of a "pidgin" language as used by linguists. You will
still see the term PSE used from time to time. But I suggest you use the newer
term "contact signing."
See the discussion on contact signing.