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, your lips look delicious Well, maybe just a cigarette more Never such a pleasure before I've got to get home But, baby, you'll freeze out there Say, lend me your comb It's up to your knees out there You've really been grand I thrill when you touch my hand But don't you see (..)2003 Elf