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1. (n.) trephine
a small circular saw used in surgery to remove disks of bone, esp. from the skull.
2. (v.t.) trephine
to operate upon with a trephine.
Etymology: (1620–30; sp. var. of trefine, orig. trafine, b. trapan (var. of trepan1) and L phrase trēs fīnēs three ends)
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| Definition of 'trephine' |
Princeton's WordNet |
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1. (verb) trepan, trephine
a surgical instrument used to remove sections of bone from the skull
2. (verb) trephine
operate on with a trephine
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| Definition of 'trephine' |
Webster Dictionary |
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1. (noun) trephine
an instrument for trepanning, being an improvement on the trepan. It is a circular or cylindrical saw, with a handle like that of a gimlet, and a little sharp perforator called the center pin
2. (verb) trephine
to perforate with a trephine; to trepan
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Definitions of trephine 
