Wiktionary
undercoated
vb. (en-past of: undercoat)
WordNet
undercoated
adj. (of motor vehicles) having a coating of tar or rubber-based material applied to the underside to retard rusting [syn: undersealed]
Usage examples of "undercoated".
The clouds on the western horizon were still undercoated with slate gray, while the upper eastern strata were burnished with orange and gold and deep, deep coral.