Definition of "unlax"

Episode or segment titled "Check and double check (Don't hold your breath, unlax)." (ref. "Black Radio: Telling it Like it Was", Indiana University Archive, Collector's No. BROS0429, Shelf No. cass 1696; http://webapp1.dlib.indiana.edu/findingaids/view?doc.view=entire_text&docId=VAC0316 retrieved 2017-02-09)

1926, Amos 'n' Andy

Inside the dollhouse they unlaxed and had a drink.

2003, Alice Denham, My Darling from the Lions, page 164

“Unlax, Doc. Remember when Phil was having that squirrel problem with his cedar siding? The little bastards ate a couple of holes in his eaves and built a nest in his attic. I'm just going to ask him if he still has that problem, Sam.”

2010, Harrison Lee Rodebaugh, Gently Into The Night, page 60

There's one neighborhood tavern where the regulars and irregulars go after a hard day to unlax and rewind, throw back a few, and just hang out - you know the one.

2015, Brian Cook, Hands Across The Sea, page 190