noun
self-inflicted pain; hurting oneself (to deceive an opponent)
Rarely used alone; almost exclusively appears in the idiom 苦肉の策 (a desperate measure born of self-sacrifice or a painful choice). The literal sense of 'hurting oneself to trick an adversary' is historical/strategic.
See also: 苦肉の策
「苦肉の策」という言葉は、自分を傷つけてでも相手を欺く苦しい手段を指す。
The phrase 苦肉の策 refers to a painful measure in which one would even hurt oneself to deceive the opponent.