It's surprising that he would 'lend his name' to such a venture. [=that he would allow his name to be associated with such a venture]
A growing amount of evidence 'lends weight/credence/credibility' to their theory. [=makes their theory seem true or correct]
A bit of grated carrot 'lends' some color to the dish. = A bit of grated carrot 'lends' the dish some color.
(..) Oh, thanks, lady! You have a good day. Thanks a lot! I really gotta get home, man. If you could lend me a just, like, a buck-- Get outta here. Excuse me, lady. Excuse me. My friends and I (..)1993 Free Willy