Longman Dictionary of Contemporary English - slide

~1 v past tense and past participle slid, 1 to move smoothly over a surface while continuing to touch it, or to make something move in this way + along/across/down etc  (The kids were sliding on the ice.) slide sth across/along etc  (Peter slid his glass across the table.) 2 T always + adv/prep to move somewhere quietly without being noticed, or to move something in this way + into/out of etc  (Daniel slid out of the room when no one was looking.) slide sth into/out of etc  (She slid a gun into her pocket.) 3 if prices etc slide, they become lower  (When will the government take action to support the sliding pound?) 4 let sth slide to let a situation get gradually worse, without trying to stop it  (Simon had really let things slide and the house was a mess.) ~2 n 1 »FOR CHILDREN« a large structure for children to slide down at a playground 2 »FOR HAIR« a small metal or plastic object that holds your hair in place 3 »MOVEMENT« a sliding movement across a surface  (The car went into a slide on the surface.) 4 »PICTURE« a small piece of film in a frame that shows a picture on a screen1 (2a) when you shine light through it  (Don't you want to see my slides of Korea?) 5 »PRICE/AMOUNT« a fall in prices, amounts etc  (a slide in living standards) 6 »IN SCIENCE« a small piece of thin glass used for holding something when you look at it under a microscope 7 »MUSIC« a part of a machine or musical instrument, such as the U-shaped tube of a trombone 8 »EARTH/SNOW« AmE a sudden fall of earth, stones, snow etc down a slope  (- see also landslide)