κεφαλοτρύπανον

From LSJ

Ἀναξαγόρας δύο ἔλεγε διδασκαλίας εἶναι θανάτου, τόν τε πρὸ τοῦ γενέσθαι χρόνον καὶ τὸν ὕπνονAnaxagoras used to say that we have two teachers for death: the time before we were born and sleep | Anaxagoras said that there are two rehearsals for death: the time before being born and sleep

Source
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Full diacritics: κεφᾰλοτρῡ́πᾰνον Medium diacritics: κεφαλοτρύπανον Low diacritics: κεφαλοτρύπανον Capitals: ΚΕΦΑΛΟΤΡΥΠΑΝΟΝ
Transliteration A: kephalotrýpanon Transliteration B: kephalotrypanon Transliteration C: kefalotrypanon Beta Code: kefalotru/panon

English (LSJ)

[ῡ], τό, trepan, trephine Gal.14.785.

German (Pape)

[Seite 1428] τό, Schädelbohrer, Galen.

Greek (Liddell-Scott)

κεφᾰλοτρύπᾰνον: τό, τρυπάνιον, Γαλην. 2. 399.

Greek Monolingual

κεφαλοτρύπανον, τὸ (Α)
ιατρικό τρυπάνι για τρύπημα του κρανίου.
[ΕΤΥΜΟΛ. < κεφαλ(ο)- + -τρύπανον (< τρύπανον < τρυπῶ), πρβλ. ελικοτρύπανον, σιδηροτρύπανον.

Wikipedia EN

A trephine (/trɪˈfaɪn/; from Greek τρύπανον, trypanon 'instrument for boring') is a surgical instrument with a cylindrical blade. It can be of one of several dimensions and designs depending on what it is meant to be used for. They may be specially designed for obtaining a cylindrically shaped core of bone that can be used for tests and bone studies, cutting holes in bones (e.g., the skull) or for cutting out a round piece of the cornea for eye surgery.