Have a look in the smash dictionary. (Linked in my signature.)That explains it. what's a glide toss then?
and a super glide toss is where it's a grab-cancelled with usmash inputted in between? makes mega man/link slide pretty far?
Cancelling the initial frames of a dash item toss with a regular standing item toss in any direction and getting a slide from it is generally referred to as Boost Tossing though it has many other names, some more technical like DITCIT or DACIT with the 'sliding' part assumed, and some more character specific like Bomb Sliding.