翻譯名義集 3.220

3.220

【牟婆洛揭拉婆】或云牟呼婆羯落婆，此云青白色寶，今名硨磲。《尚書》大傳云：「大貝如車之渠，渠謂車輞，其狀類之，故名車渠。」渠，魁也。後人字加玉石。

[Musāragalva] Or called muhupojieluopo; here translated as blue-and-white treasure, now named tridacna (giant clam). The Shangshu dazhuan states: 'A large shell resembling the rut of a carriage (chequ); qu means carriage rim; its shape resembles it, hence it is called chequ.' Qu means large. Later people added the jade and stone radicals to the characters.