| 释义 |
hub
I. \ˈhəb\ noun
(-s)
Etymology: probably alteration of hob (II)
1.
a. : the usually cylindrical central part of a wheel : nave — compare : axle box
b. : the central part of a propeller or motor-driven fan to which the blades are attached
< raising the propeller hub above water so that we could get the prop off — K.M.Dodson >
2.
a. : a chief center of activity : focal point
< heart, hub, and pivot of this new Virginia Metropolis is the Pentagon — A.W.Atwood >
< Indianapolis … became the hub of a rail center with lines running in all directions — R.H.Brown >
< this fact must serve as the hub of the analysis — Political Science Quarterly >
< the hub of every hemoglobin molecule is one atom of iron — D.C.Peattie >
< Boston Statehouse is the hub of the scholar system — O.W.Holmes †1894 >
specifically : a center of circulation in architectural planning
< the dwelling has a novel hub floor plan, permitting easy access between rooms — New York Herald Tribune >
b. : a durable marker placed at an important point of a survey for use (as in triangulation)
3.
a. : a steel punch from which a working die for a coin or medal is made and which in modern processes bears the design as cut by a reducing machine copying the engraver's model
b. : hob II 4a(4)
c. : master tap
d.
(1) : a boss that resembles the hub of a wheel
(2) : barrel 3d
e. : a piece in a lock that is turned by the knob spindle passing through it and that moves the bolt
4. : a ridge on the backbone of a book (as a leather-bound book) formed by a sewing cord or a strip of cardboard : band I 5b(1)
5. : a connection or point of confluence: as
a.
(1) : a short coupling used to join pipes in plumbing
(2) also hubb : bell 5i
b. : a hole on the panelboard of a piece of electrical equipment into which a wire is plugged : electrical contact
c. : the enlarged base by which a hollow needle (as for a hypodermic) may be attached to a syringe or other device
Synonyms: see center
II. transitive verb
(hubbed ; hubbed ; hubbing ; hubs)
: hob III 2b
III. adjective
Usage: usually capitalized
Etymology: from the Hub, nickname for Boston, Mass.
chiefly New England : of or relating to the city of Boston, Mass.
< Hub officials >
IV. noun
: an airport or city through which an airline routes most of its traffic |