1. A mirror or looking-glass; a metallic or other reflector; a surgical instrument for dilating a passage with a speculum attached to reflect the interior.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• apeculum,
• zpeculum,
• xpeculum,
• dpeculum,
• epeculum,
• wpeculum,
• soeculum,
• sleculum,
• s-eculum,
• s0eculum,
• spwculum,
• spechulum,
• specuilum,
• speclum,
• speculem,
• specyllum,
• specalum,
• specluim,
• speckulam,
• speculeym

• spackle,
• special,
• speculative,
• spiculum,
• spacial,
• speckled,
• speckle,
• specular,
• spiegel,
• speculation,
• speculate,
• speculator,
• spicule,
• spicily.

The adjective form of the word "speculum" is "specular".