Meteor smash

A meteor smash is an attack in in the  series and Super Smash Flash 2 series that possesses a knockback angle of between 250° and 290°, hitting the opponent almost straight down on contact. Due to their especially low angles, they are most commonly used to KO offstage opponents or extend combos. Unlike spikes, these can be meteor canceled.

Meteor canceling
Meteor canceling is the process of canceling the reeling and knockback applied to a player after getting hit by a meteor smash by jumping or using an up special move. This can be performed at least 10 frames after hitlag ends.

Trivia

 * Although the How to Play tutorial in Super Smash Flash states that meteor smashes are present, meteor canceling is absent from the game, making every able to spike opponents rather than meteor smash them.