ETYMOLOGY
Old English oferslop (in Old Norse yfirsloppr),
from over- + slop (a smock)
EXAMPLE
“…By cause of which men sholde hym reuerence
That of his worshipe rekketh he so lite
His ouerslope nys nat worth a myte
As in effect to hym / so moot I go
It is al baudy and to-tore also…”
From: Canon’s Yeoman’s Tale
By: Geoffrey Chaucer, c1395
Lexicophilia 