audience with a superior
Formal meeting with a person of high standing, such as a lord, dignitary, or boss. Often used in historical or hierarchical contexts.
The retainer was granted an audience with the lord.
diameter at breast height
Forestry term for the diameter of a tree trunk measured at eye level (about 1.2–1.3 m above ground).
This cedar has a diameter at breast height of about 50 cm.
Compound of 目 (eye) and 通り (passing, way). The 'audience' sense derives from the idea of passing before someone's eyes; the forestry sense is a calque of English 'diameter at breast height'.