English: flipping over to expose, as of a skirt being caught in the wind
Source: Peter Martin's Kelabit Dictionary
elab 1: the shaking out of a mat or sheet
kelab: flapping
kelabet: gibbon
lelab: uncovered as of some part of the body, having being pulled back, left uncovered, as of a sheet or clothes
nekelab: flap the wings, as a rooster before crowing
ngelab: apply a poultice
ngelab (ng-elab): to shake out a mat or sheet
ngelaba (ng-laba): to overtake, crosses
ngelabo (ng-labo): to catch mice
ngelelab: to pull back and leave uncovered, of sheets, etc
pelaba: very, extremely, often