control rod

Noun

 * 1) Any of a number of steel tubes, containing boron or other neutron absorber, that are inserted into the core of a nuclear reactor in order to control its rate of reaction

Translations

 * Finnish:
 * French:
 * German: Steuerstab, Kontrollstab, Regelstab
 * Japanese:
 * Tagalog: tandos-panupil