master key

Noun

 * 1) A key designed to open a set of several locks; a passkey.
 * 2)  Any tool or technique that can solve many types of difficulty.
 * 3)  A shotgun shell designed for breaching doors.

Translations

 * Arabic:
 * Bulgarian: шперц
 * Chinese:
 * Mandarin:
 * Dutch: moedersleutel,
 * Finnish: yleisavain
 * French:, ,
 * German:, , ,
 * Hindi:
 * Hungarian: ,
 * Italian:
 * Japanese: 親鍵
 * Macedonian: калауз
 * Malay: kunci induk
 * Manx: ard-ogher
 * Portuguese:
 * Russian:
 * Spanish: llave maestra
 * Swedish:
 * Tagalog: liyabe-maestra
 * Ukrainian: