The President has a 'slender' [='narrow, slim'] lead in the polls. = The President leads by a 'slender' margin in the polls.
('formal') young people of 'slender' means [=young people who do not have much money]
an animal with a long, 'slender' snout
(..) than advanced science. But if you want to get a woman to fall in love with you, feed her poetry. Poetry. Never fails. A tall and slender maiden All alone upon a prairie... Brightest green were all her garments... And her hair was like the sunshine... Day by day he gazed upon her... Rent! (..)2004 Spider-Man 2