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.
(..) we're gonna need some gas. Well, how much gas you think is in there right now? Well, it's on E. You know, Rick, often times, Jerry, he lends me his car... ...and I find myself in a situation where the car is almost out of gas. But for a variety of reasons... ...I don't wanna be the one responsible (..)1998 TvShow: Seinfeld Title: The Dealership Season: 9 Episode 11