ETYMOLOGY
perhaps a variation of jimp (slender, slim, delicate, graceful, neat)
EXAMPLE
“…Hys wifis, Toppa and Partelot, hym by,
As byrd al tyme that hantis bigamy.
The pantyt povn, pasand with plomys gym,
Kest vp his taill, a provd plesand quheill rym,
Yschrowdyt in hys fedrame brycht and scheyn,
Schapand the prent of Argus hundreth eyn…”
From: Virgil’s Aeneid translated into Scottish verse
By Gavin Douglas, 1513
Lexicophilia 