Investopedia Says: 1) A good example of a negative spike in the financial markets is the infamous stock market crash of Oct 19, 1987, when the DJIA plunged 22% in a single day. There are plenty of more common, less drastic examples which are periodically seen in individual stocks when unexpected news or events, such as better-than-expected earnings results, reaches investors.2) This usage originates from the antiquated practice of placing paper trade order slips on a metal spike upon completion.

Related Links: From a tulip craze to a dotcom bubble, read the cautionary tales of the stock market's greatest disasters. The Greatest Market CrashesFind out the various ways in which a broker can fill an order, which can affect costs. Understanding Order ExecutionTaking control of your portfolio means knowing when to use particular orders and if they pose added costs. The Basics Of Order EntryFrom picking the right type of stock to setting stop-losses, learn how to trade wisely. Day Trading Strategies For Beginners

1. To defeat a selection mechanism by introducing a (sometimes temporary) device that forces a specific result. The word is used in several industries; telephone engineers refer to spiking a relay by inserting a pin to hold the relay in either the closed or open state, and railroaders refer to spiking a track switch so that it cannot be moved. In programming environments it normally refers to a temporary change, usually for testing purposes (as opposed to a permanent change, which would be called hardwired).

2. [borderline techspeak] A visible peak in an otherwise rather constant graph (e.g. a sudden surge in line voltage, an unexpected short “high” on a logical line in a circuit). Hackers frequently use this for a sudden short increase in some quantity such as system load or network traffic. Architecture:spikeTopHome > Library > Home & Garden > Architecture and Construction A very heavy nail, 3 in. (7.6 cm) to 12 in. (30.5 cm) in length, usually having a rectangular cross section. Gardener's Dictionary:spikeTopHome > Library > Home & Garden > Dictionary for Gardeners An elongated flower cluster with individual flowers borne on very short stalks or attached directly to the main stem. document.write('') Wikipedia: SpikeTopHome > Library > Miscellaneous > Wikipedia For the X-Men: Evolution character, see Spyke.Look up spike in Wiktionary, the free dictionary.Spike(s) may refer to:

Dansk (Danish)1. n. - pig, spyd, spids, spiger, stilethæl, murstiftv. tr. - spidde, spigre, forsyne med pigge, tilsætte spiritus til idioms:spike heel stilethæl2. n. - aks

Nederlands (Dutch)grote spijker, piek, scherpe punt, punt onder een sportschoen, geweipunt, aar, vastzetten met grote spijkers, afstoppen (van een kanonloop), alcohol toevoegen, spietsen, kleine hoeveelheid chemicaliën toevoegen

Français (French)1. n. - épi, hampe, dague, (Sport) pointe (sur une chaussure), (Phys) pointe de courant, pointe, (Sport) smash, (Zool) daguev. tr. - embrocher, corser (une boisson), (Journ) mettre (qch) au panier (une histoire), (Sport) faire un smash, contrecarrer, étouffer (une rumeur) idioms:spike heel talon aiguille2. n. - (Bot) hampe

Deutsch (German)1. n. - Stachel, Spike, Nagel, Ährev. - durchbohren, festnageln, (mit Alkohol od. Drogen) versetzen idioms:spike heel Stöckelabsatz2. n. - Stachel, Spike, Nagel, Ähre

Ελληνική (Greek)n. - ακίδα, αιχμηρή απόληξη, καρφί, πάσσαλος, στάχυ, ανθοταξία, μακρύ νύχι αρπακτικού, κέρατο ζώου, (ηλεκτρ.) αιχμή (στιγμιαία άνοδος) τάσης, (μτφ.) αιχμή, μπηχτή, (Βρετ., αργκό) φτηνή πανσιόν, κυρίως για άστεγους, (στον πληθ.) αθλητικά παπούτσια με καρφιάv. - καρφώνω, διατρυπώ, ανατρέπω, αχρηστεύω (σχέδια κ.λπ.), (καθομ.) προσθέτω αλκοόλ σε ποτό idioms:spike heel μυτερό τακούνι γυναικείου υποδήματος

Italiano (Italian)spiga, punzone, inchiodare idioms:spike heel tacchi a punta