1. piercing with a sharp pointed object
2. fixing or displaying something on a sharp point

Examples

• The knight was impaling his enemies with his lance.
• She was impaling the butterfly specimens on pins for her collection.
• The fence was impaling fallen leaves on its sharp points.
• The scientist was impaling tissue samples for microscopic examination.
• He was impaling marshmallows on sticks for roasting.
• The thorns were impaling anyone who tried to climb the wall.