noun

• (nautical, slang, uncountable) Clothing.
• (fishing, uncountable) Equipment (rod, reel, line, lure, etc.) used when angling.
• (uncountable, informal, by extension) Equipment, gear, gadgetry.
  "2004 June 24–30, "Jeff Gordon Never Gets Tired Of Seeing Face On Cheap Plastic Crap", The Onion, available in Embedded in America, →ISBN, page 193, ... an illuminated license-plate frame bearing his likeness, signature, and yellow number 24. "That there's a real nice piece of tackle. ...""
• (sports, countable) A play where a player attempts to take control over the ball from an opponent, as in rugby or football.

verb

• (sports) To attempt to take away a ball.
• (rugby, American football) To bring a ball carrier to the ground.
• (Singapore, colloquial) To "hit on" or pursue a person that one is interested in.
  ""Singing is the oldest, most effective and productive way to tackle girls," asserted the 37-year-old, affectionately known as Ah Guan at Tan Chang Ren Music Station."