Flag football or touch football
Yes, that is the very definition of a drop kick in every sport that allows it. A drop kick is a type of kick whereby the ball bounces off the ground before kicking it. It is a legal play not only in the NFL but in the CFL, association football (soccer), rugby, Arena football, and Australian rules football.
This term can mean to start something, like the opening kick in a game involving a ball. It can also mean the start of some other type of event such as a pub crawl. In someplaces it can mean the death of a person, such as--> "My grandfather kicked off last night."
A running play.
Punt - which you do if you can not get a first down after 3 plays. Or a kick off - which is what you do after you score to give the other team the ball.
If you mean by 'kick' 'remove from a game that you are hosting', press the ` key (next to the 1 key) to open the console, then type 'kick ' followed by the player name.
Some football type games with a oval ball are AFL (Australian Football League*), American Football and Rugby.
Optional mark is a type of marker on the field. It's used to mark where the ball should be for a free kick in the game.