expression
making the strong even stronger; adding power to power
Idiom meaning to give additional strength or advantage to someone already powerful. Often compared to 鬼に金棒.
See also: 鬼に金棒
彼はもともと優秀な営業マンだが、最新の分析ツールを手に入れて虎に翼の状態だ。
He was already an excellent salesperson, and with the latest analysis tools, he's become even more formidable.
大企業が政府の補助金を得るのは虎に翼だ。
It's like giving wings to a tiger when a large corporation receives government subsidies.