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top,

toy with a tapering point on which it can be made to spin. Tops were known in antiquity and appeared in Europe during the Middle Ages; they are used today in many different regions of the world by both primitive and advanced societies. The principle of its motion is utilized in the gyroscopegyroscope
, symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the gyroscope has special properties. Many spinning objects exhibit some of these properties; the rotation of the earth about its axis gives it the
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.

top

[täp]
(geology)
(mechanics)
A rigid body, one point of which is held fixed in an inertial reference frame, and which usually has an axis of symmetry passing through this point; its motion is usually studied when it is spinning rapidly about the axis of symmetry.
(particle physics)
The new quantum number associated with the top quark. Also known as truth.
(quantum mechanics)

top

1. short for top gear
2. Cards the highest card of a suit in a player's hand
3. a platform around the head of a lower mast of a sailing vessel, the edges of which serve to extend the topmast shrouds
4. Chem the part of a volatile liquid mixture that distils first
5. the high-frequency content of an audio signal

TOP

TOP

(Technical Office Protocol) A communications protocol for office systems developed in the early 1980s by the Computer Services division of Boeing in Seattle, WA. It is often used in conjunction with MAP, the factory automation protocol developed by GM. TOP is used in the front office, and MAP is used on the factory floor. TOP uses the CSMA/CD access method (Ethernet), while MAP uses token bus.
References in periodicals archive ?
In episode 2, the two cups of coffee that the assistant, at the toy shop, is holding also has top hat printed on them.
The turnover of cast members in musicals such as Top Hat, pictured, can create opportunities for relative unknowns
3) Carefully cut out the inside black rectangle from the top hat (leave the narrow, white frame edge).
Top hats are in some ways the symbol of Royal Ascot in that if you're a man in the Royal Enclosure you have to wear one, a most welcome requirement for Moss Bros.
Performed by a cast of 31 and accompanied by a live band of 15, this new musical comedy will include Irving Berlin classics from the movie Cheek to Cheek, Isn't It a Lovely Day to be Caught in the Rain and Top Hat White Tie and Tails.
The company's Eliminator lateral connection sealing system was featured at the 2009 UCT show in San Antonio and is available for purchase and delivery now, says Chris Scarrett, chief operating officer of Cosmic Top Hat.
At Ford, we view the top hat as being the upper body structure of the vehicle which is set on a common set of underpinnings.
WEISSMAN'S DESIGNS FOR DANCE 3707 Good Luck Charm 99-7005 Mock Turtleneck V404 Pants 8594 Top Hat (By ART STONE/THE COMPETITOR)
Wearing three-inch vinyl platform boots and a formal tuxedo with top hat and tails, Tennessee--tonight known as "Ace, the Prince of Wales" but usually known by his drag alter ego, "Foxy Cleopatra"--gracefully moved through the crowd as friends reached out to touch him.
The three objectives of this article include: a focus on top hats with a brief overview of how the beaver felt hat was manufactured; second, historic images of various Indians wearing top hats; last, a focus on one outstanding Lakota decorated top hat and contemporary reproductions.
Leather jacket, Freddy Krueger stripes, Clockwork Orange top hat and, yes, tight pants: Corey Duffel's blunt was just too easy.