spear

v. pierce or thrust at with or as if with a spear; pass quickly; sprout, thrust upward (about plants)

n. weapon consisting of a long staff with a sharpened point, lance, javelin; pointy sprout or leaf of a plant

This is an article about a collider. For uses of spear, see spear or spear (disambiguation). SPEAR (Stanford Positron Electron Asymmetric Ring) is a collider at the Stanford Linear Accelerator Center. It began running in 1972, colliding electrons and positrons with an energy of 3 GeV. During the 1970's, experiments at the accelerator played a key role in particle physics research, including the discovery of the J/ψ particle and other charmonium states and the discovery of the tau lepton.
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Spear λόγχη, Latin: Hasta, Lancea German: Speer, Lanze, French: Lance, Spanish: Lanza, Portuguese: Lança, Italian: Lancia) is the name of a pole weapon used for hunting and war, consisting of a shaft, usually of wood, with a sharpened head. The head may be simply the sharpened end of the shaft itself, as is the case with bamboo spears, or it may be of another material fastened to the shaft, such as obsidian or bronze. The most common design is of a metal spearhead, shaped like a triangle or a leaf.
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Noun
1. a long pointed rod used as a weapon
(synonym) lance, shaft
(hypernym) weapon, arm, weapon system
(hyponym) assegai, assagai
(part-meronym) barb
(derivation) spear up
2. an implement with a shaft and barbed point used for catching fish
(synonym) gig, fizgig, fishgig, lance
(hypernym) implement
(hyponym) harpoon
(member-holonym) fishing gear, tackle, fishing tackle, fishing rig, rig
Verb
1. pierce with a spear; "spear fish"
(hypernym) transfix, impale, empale, spike
(derivation) gig, fizgig, fishgig, lance
2. thrust up like a spear; "The branch speared up into the air"
(synonym) spear up
(hypernym) stick out, protrude, jut out, jut, project
(derivation) lance, shaft

(v. t.)
To pierce with a spear; to kill with a spear; as, to spear a fish.
  

(v. i.)
To shoot into a long stem, as some plants. See Spire.
  

(n.)
The rod to which the bucket, or plunger, of a pump is attached; a pump rod.
  

(n.)
The feather of a horse. See Feather, n., 4.
  

(n.)
Fig.: A spearman.
  

(n.)
A shoot, as of grass; a spire.
  

(n.)
A sharp-pointed instrument with barbs, used for stabbing fish and other animals.
  

(n.)
A long, pointed weapon, used in war and hunting, by thrusting or throwing; a weapon with a long shaft and a sharp head or blade; a lance.
  

"The oldest form of staff weapon, intended primarily for thrusting. The war spear usually had a long, leaf-shaped or long, thin, triangular head."-David Edge and John Miles Paddock, Arms and Armour of the Medieval Knight. In common use during the entire middle ages, the spear ranged in length from five to nine feet, at which point modern scholars begin referring to them as pikes rather than spears.