trepan

n.

1. A rock-boring tool used in mining for sinking shafts.
2. Medicine. A trephine.

tr.v., -panned, -pan·ning, -pans.

1. To bore (a shaft) with a trepan.
2. Medicine. To trephine.

[Middle English trepane, surgical crown saw, from Medieval Latin trepanum, from Greek trūpanon, borer, from trūpān, to pierce, from trūpē, hole.]

trepanation trep'a·na'tion (trĕp'ə-nā'shən) n.

tre·pan² (trĭ-păn') also tra·pan (trə-) Archaic.
tr.v., -panned, also -panned, -pan·ning, -pan·ning, -pans, -pans.
To trap; ensnare.

n.

1. A trickster.
2. A trick or snare.

[Origin unknown.]

(trĭ-păn')
n.

A trephine.

v., -panned, -pan·ning, -pans.

To trephine.

Note: click on a word meaning below to see its connections and related words.

The noun has 2 meanings:

Meaning #1: a surgical instrument used to remove sections of bone from the skull
  Synonym: trephine

Meaning #2: a drill for cutting circular holes around a center

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The verb trepan has one meaning:

Meaning #1: cut a hole with a trepan; in surgery

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