- the matériel and services supplied by the United States to its allies during World War II under an act of Congress (Lend-Lease Act ) passed in 1941: such aid was to be repaid in kind after the war.
- the two-way transfer of ideas, styles, etc.
- to supply (matériel or services) as authorized by the Lend-Lease Act.
- (during World War II) the system organized by the US in 1941 by which equipment and services were provided for countries fighting Germany
