[ spahy-der ]
/ ˈspaɪ dər /


verb (used with object)

Also crawl. Digital Technology. to retrieve (data) from a website using a computer program, as in order to index web pages for a search engine: Her company spiders the web for cheap flights and vacation deals.

Nearby words

  1. spiculation,
  2. spicule,
  3. spiculum,
  4. spicy,
  5. spide,
  6. spider crab,
  7. spider fly,
  8. spider hole,
  9. spider lily,
  10. spider mite

Origin of spider

1300–50; Middle English spithre, Old English spīthra, akin to spinnan to spin; cognate with Danish spinder

Related formsspi·der·less, adjectivespi·der·like, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for spider

British Dictionary definitions for spider


/ (ˈspaɪdə) /


Word Origin for spider

Old English spīthra; related to Danish spinder, German Spinne; see spin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for spider



Old English spiþra, from Proto-Germanic *spenthro (cf. Danish spinder), from *spenwanan "to spin" (see spin). The connection with the root is more transparent in other Germanic cognates (cf. Middle Low German, Middle Dutch, Middle High German, German spinne, Dutch spin "spider").

In literature, often a figure of cunning, skill, and industry as well as poisonous predation. As the name for a type of two-pack solitaire, it is attested from 1890. Another Old English word for the creature was gangewifre "a weaver as he goes," and Middle English also had araine "spider" (14c.-15c., from French). Spider plant is from 1852; spider crab is from 1710; spider monkey is from 1764, so called for its long limbs.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for spider


[ spīdər ]


Any of numerous arachnids of the order Araneae, having a body divided into a cephalothorax bearing eight legs, two poison fangs, and two feelers and an unsegmented abdomen bearing several spinnerets that produce the silk used to make nests, cocoons, or webs for trapping insects.
An arterial spider.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.