pack rat

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A person who hoards objects of little worth—e.g., string, old newspapers, etc.—or sentimental value. The pack rat mentality is typical of obsessive-compulsive disorder

pack rat

Psychiatry A person who hoards objects of little worth–eg, string, old newspapers, etc–and lacking sentimental value; the PR mentality is typical of OCD. Cf Obsessive-compulsive disorder.


small, furred mammal; members of the family Murinae (Old World rats) and the family Cricetinae (New World rats) both of the order Rodentia. They are omnivorous, nocturnal, do not hibernate and live commensally with humans. They have pointed snouts, a long, thin, almost hairless tail. Only some of the members of the rat and allied groups are listed below.

rat bite fever
black rat
Old World rat with long tail and ears. Called also Rattus rattus.
brown rat
Old World rat with short tail and ears. Called also Rattus norvegicus.
rat flea
kangaroo rat
a solitary rodent with long legs with which it progresses in leaps like a kangaroo and uses its large tail as a balancer. Called also Dipodomys deserti.
rat leprosy
a chronic, largely cutaneous disease of rats caused by Mycobacterium lepraemurium and characterized by subcutaneous granuloma and similar involvement of superficial lymph nodes, containing large numbers of acid-fast organisms. The disease has little similarity to nor any relationship with human leprosy. See also feline leprosy.
Long-Evans rat
laboratory rat with brown or black head and shoulders.
musk rat
properly called muskrat and is really a water vole. Called also Ondatra zibethica.
pack rat
New World rat-like creature. Called also Neotoma spp., wood rat.
sand rat
see gerbil.
Sprague-Dawley rat
albino laboratory rat.
rat tooth, teeth
describes the type of points on surgical instruments with a single point on one side which interlocks with two points on the other side.
water rat
properly called water vole; in Australia, water rat is a native rodent Hydromys chrysogaster.
white rat
common laboratory rat.
Wistar rat
a white laboratory rat.
References in periodicals archive ?
Unlike satin bowerbirds, which decorate mating sites with such treasures as pen caps and clothespins, packrat collectibles aren't on display.
1988), which merely list the arthropods found on or inside the packrat nests.
McDowell's Antiques: 777-0601, Packrat Antiques: 778-1211.
Packrats - Users who have large amounts of files clogging up their hard drives and are looking for a way to organize important documents and deleted unwanted files.
Clutter, Chaos, & the Cure: Or Why You Never Misplace Your Toothbrush" is highly recommended for any packrat or recovering case and for community library self-help collections.
I am as guilty as you can get, I'm an admitted packrat.
Regional packrat (Rodentia, Neotoma) midden studies and other faunal evidence provide a basis for the interpretation of paleoenvironmental conditions at Muskox Cave.
Gowalla is also the creator of the addictive Facebook game PackRat.
In order to accommodate the increased demands associated with the recovery process, 1-800-PACK-RAT has brought in additional personnel, extra PACKRAT containers, and a supply of diesel fuel.
The 1-800-PACK-RAT Gurnee, IL franchise is located at 5605 Centerpoint Gurnee, IL 60031 and is operated by WM Packrat.
There's one thing I know about this place: Nothing ever stays in the dumpster for more than 10 minutes,'' Cummings said of the packrat artistic mentality.
Melfunny assures his packrat viewers that they don't have to do anything extreme, like clean their desk, to register to win the $10,000.