Wiktionary
n. A children's toy in the form of a posable plastic figurine of a character, often from a film, video game, or television program, with moving parts and often capable of some form of spring-loaded movement.
Wikipedia
An action figure is a poseable character figurine, made of plastic or other materials, and often based upon characters from a film, comic book, video game, or television program. These action figures are usually marketed toward boys and adult collectors.
According to a study in Sweden, action figure with traditional masculine traits primarily target boys. While most commonly marketed as a children's toy, the action figure has gained wide acceptance as an adult collector item. In such a case, the item may be produced and designed on the assumption it will be bought solely for display.
Usage examples of "action figure".
Mostly he just sits plonked down out there in the sandbox Herb put in as soon as we got back from Toledo, like a big boy-shaped raisin, wearing only his MotoKops 2200 Underoos (he has the lunchbox, too), mouthing his nonsense words, playing with his vans and the action figures that go with them, especially the sexy redhead in the blue shorts.
He just sat there between me and Herb with two of his toys on his lap a pink van he calls 'Dweem Fwoatah' and the action figure that goes with it, a sexy little redhead named Cassandra Styles.
He tucks the action figure into the pants pocket not holding the oversized slug and begins to wriggle after Brad.
He's got all the MotoKops shit action figures, HQ Crisis Center, Cassie's Party Pad, Power Wagon Corral, two stun pistols, even 'floatpad sheets' for his bed.
He showed me an action figure from the show, a lady with red hair and a blaster that he could take out of her holster and kind of stick in her hand.
It was his little plastic action figure, the red-head with the blaster.
When I gave him his little action figure woman, he smiled at me and kissed my cheek.
They both care a great deal for the Cassandra Styles action figure, but Tak's caring is almost completely sexual.