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trepan    
n. 环锯,钻孔机
vt. 用环锯行手术,诱入圈套,欺骗

环锯,钻孔机用环锯行手术,诱入圈套,欺骗

trepan
n 1: a surgical instrument used to remove sections of bone from
the skull [synonym: {trepan}, {trephine}]
2: a drill for cutting circular holes around a center
v 1: cut a hole with a trepan, as in surgery

Trepan \Tre*pan"\, n. [F. tr['e]pan (cf. Sp. tr['e]pano, It.
trepano, trapano), LL. trepanum, fr. Gr. ? a borer, auger,
trepan, fr. ? to bore, ? a hole. Cf. {Trephine}.]
1. (Surg.) A crown-saw or cylindrical saw for perforating the
skull, turned, when used, like a bit or gimlet. See
{Trephine}.
[1913 Webster]

2. (Mining) A kind of broad chisel for sinking shafts.
[1913 Webster]


Trepan \Tre*pan"\, v. t. & i. [imp. & p. p. {Trepanned}; p. pr.
& vb. n. {Trepanning}.] [Cf. F. tr['e]paner. See {Trepan} a
saw.] (Surg.)
To perforate (the skull) with a trepan, so as to remove a
portion of the bone, and thus relieve the brain from pressure
or irritation; to perform an operation with the trepan.
[1913 Webster]


Trepan \Tre*pan"\, n. [See {Trapan}.]
1. A snare; a trapan.
[1913 Webster]

Snares and trepans that common life lays in its way.
--South.
[1913 Webster]

2. a deceiver; a cheat.
[1913 Webster]

He had been from the beginning a spy and a trepan.
--Macaulay.
[1913 Webster]


Trepan \Tre*pan"\, v. t.
To insnare; to trap; to trapan.
[1913 Webster]

Guards even of a dozen men were silently trepanned from
their stations. --De Quincey.
[1913 Webster]


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  • 1 - Wikipedia
    1 (one, unit, unity) is a number, numeral, and grapheme It is the first and smallest positive integer of the infinite sequence of natural numbers
  • 1 - Wiktionary, the free dictionary
    Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1, “éka”)), possibly influenced by Roman numeral Ⅰ, both ultimately from using a single stroke to represent the number one
  • 1 (number) - New World Encyclopedia
    The glyph used today in the Western world to represent the number 1, a vertical line, often with a serif at the top and sometimes a short horizontal line at the bottom, traces its roots back to the Indians, who wrote 1 as a horizontal line, as is still the case in Chinese script
  • About The Number 1 - numeraly. com
    The number 1 is unique in many ways, and holds a fascinating position in the world of mathematics, science, and culture As the first whole number, it is the foundation for all other numbers and serves as the starting point for counting
  • Number 1 - Curious Math Facts and Interesting Properties
    In a nutshell 1 is an odd number which is uniquely neither prime nor composite It is known as the multiplicative identity or unit It’s also the only positive number with no other divisors
  • The number one - Britannica
    The number 1 symbolized unity and the origin of all things, since all other numbers can be created from 1 by adding enough copies of it For example, 7 = 1 + 1 + 1 + 1 + 1 + 1 + 1
  • 1 -- from Wolfram MathWorld
    Although the number 1 used to be considered a prime number, it requires special treatment in so many definitions and applications involving primes greater than or equal to 2 that it is usually placed into a class of its own (Wells 1986, p 31)
  • 1 Definition Meaning - Merriam-Webster
    one 1 of 3 adjective ˈwən ˌwən 1 : being a single unit or thing see number 2 : being a certain unit or thing
  • Properties of the number 1 - numberempire. com
    Properties of the number 1: factors, prime check, fibonacci check, bell number check, binary, octal, hexadecimal representations and more
  • What Is 1? Definition, Facts Examples for Kids - Vedantu
    Discover what the number 1 means with fun examples Learn how to write 1 in words and boost your maths skills with Vedantu!





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