1. A semitranslucent form of opal that becomes translucent or transparent when immersed in water

Derived forms: hydrophanes

• slip in
• slip noose
• slip of paper
• slip of the tongue
• slip off
• slip one's mind
• slip ring
• slip road
• slip stitch
• slip-joint pliers
• slip-on
• slip-up
• slipcase
• slipcover
• slipknot
• slipover
• slippage
• slipped disc
• slipper
• slipper orchid
• slipper plant
• slipper spurge
• slipper-shaped
• slippered
• slipperiness