Noun
(logistics) Initialism of unit load device: a standardised pallet or container, used primarily for air freight.
Initialism of upper limb disorder, pain or discomfort in the fingers, hands, wrists, arms, shoulders, or neck.
Source: en.wiktionary.orgBy means of belts and rollers an operator can maneuver the ULD from the dolly cart, up to the aircraft baggage hold door, and into the aircraft. Source: Internet
Inside the hold, the floor is also equipped with drive wheels and rollers that an operator inside can use to move the ULD properly into place. Source: Internet
Locks in the floor are used to hold the ULD in place during flight. Source: Internet