trepan

A noun referring to a surgical instrument used to remove sections of bone from the skull, or a drill for cutting circular holes around a center.

• 🇨🇳指用于在颅骨上钻孔或切除骨片的外科器械，也指用于在材料上切割圆孔的钻头。

1. Surgical instrument C2 formal medical

   A cylindrical saw used in surgery to remove a disc of bone from the skull, typically for accessing the brain.

   • The surgeon used a trepan to create an opening in the patient's skull.
   • Ancient trepans were often made of bronze or iron.
   • The trepan's design allows for precise bone removal.

   🇨🇳环钻

   同义词: trephine

2. Drilling tool C2 formal technical

   A tool or drill used for cutting circular holes around a central point, often in wood or metal.

   • The carpenter used a trepan to bore a hole in the wooden plank.
   • A trepan is essential for creating precise circular cuts in metalworking.
   • The old trepan was operated by hand, requiring significant effort.

   🇨🇳钻孔工具

   同义词: boredrilltrephine

• trepans plural form
• trepans' possessive plural form
• trepan's possessive singular form

A verb meaning to bore a hole in the skull (trepanning) or, historically, to entrap or ensnare someone by trickery.

• 🇨🇳动词，指在头骨上钻孔（环钻术），也指历史上用欺骗手段诱捕或陷害某人。

1. Surgical drilling C2 formal medical

   To cut a hole in the skull using a trepan, a surgical instrument, typically to relieve pressure or treat certain conditions.

   • The surgeon had to trepan the patient's skull to reduce intracranial pressure.
   • Ancient healers would trepan the skull to release evil spirits.
   • The procedure to trepan the bone was performed with precision.

   🇨🇳环钻术

   同义词: trephine

• trepanned past participle
• trepanned past simple
• trepanning present participle
• trepans third person singular