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| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a chattering or flighty, light-headed person. |
| jumping spider | |
| —n | |
| any spider of the family Salticidae, esp Attulus saltator, that catch their prey by hunting and can jump considerable distances | |
jumping spider
any of about 3,000 species of spiders (order Araneida) known for their ability to jump and pounce upon their prey. They range in size from 3 to 17 mm (0.12 to 0.67 inch), although most are small to medium-sized. They are very common in the tropics, but many also live in northern and even Arctic regions. The hairy body is often brightly coloured or strikingly patterned. Jumping spiders have keen vision for spiders and are active during the day in sunny areas. At night they hide in closely woven nests under bark, stones, or leaves. Several members of the same species often build nests close together.
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