6 letters · 8 points in Scrabble
verb place in a confining or embarrassing position
verb catch in or as if in a trap
verb hold or catch as if in a trap
originObscure, as is common among colloquialisms. OED mentions possible association with Dutch trappen (“to tread or stamp the foot”), but objects that the connection is unconvincing.
Etymology from Wiktionary, CC BY-SA 3.0