(idiomatic, US) Basic tasks or skills in an undertaking or occupation.

(American football) Any of a few defensive positions in the middle of the defensive line.

(American football) A lineman for the team in possession of the ball located outside one of the guard positions.

A system in which a rope, cable, or chain (the tackle) is passed over pulleys enclosed in two (or rarely more) blocks, one fixed and one attached to a load, which is used to gain mechanical advantage to lift or pull heavy loads.

(soccer) a tackle to get the ball by sliding on the ground feet-first

(rugby) An offensive tackle in which the tackled player is lifted up and driven into the ground head-first. This is very dangerous and can result in serious injury to the neck and spine and often a red or yellow card.

plural of high tackle

plural of spear tackle

(rugby union, rugby league) A legal form of tackling when the player wraps his arms around the ball carrier's thighs and lifts him a short distance in the air before forcibly driving him to the ground.

plural of dump tackle