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Ⅰ.
wet lease UK US noun [C] TRANSPORT
► an agreement to pay to use an aircraft with a crew, fuel, and insurance
Ⅱ.
wet lease UK US (also wet-lease) verb [T] TRANSPORT
► to pay to use an aircraft with a crew, fuel, and insurance: »
Afghanistan's Safi Airways is to wet-lease aircraft to maintain its German route.
Financial and business terms. 2012.