【化】 belt filler
leather belt; strap; thong
【机】 belt; leather belt; leather machine belting; strap
oiling
【机】 oiling
cut; gob; jaws; mouth; opening; ostium; scoop; stoma
【医】 aditus; apertura; aperturae; aperture; bouche; introitus; meatus; mouth
opening; ora; orifice; orificium; oro-; os1; ostia; ostium; portal
stoma; stomata; stomato-; trema