How to Treat a Jammed Finger - Health Sutra - Duration: 1:54. Health Sutra - Best Health Tips 79,423 views
Brown rat. The brown rat, also referred to as common rat, street rat, sewer rat, Hanover rat, Norway rat, Norwegian rat, or wharf rat (Rattus norvegicus) is one of the best known and most common rats.
verb. A grey rat. A grey rat. The definition of a rat is a rodent with a lengthy tail, or is slang for a sneaky person. 1  An example of a rat is a roof rat.2  An example of a rat is a person who plays mean tricks on his coworkers.plural rats). ( 1 zoology) A medium-sized rodent belonging to the genus Rattus. ( 2 informal) A term indiscriminately applied to numerous members of several rodent families (e.g. voles and mice) having bodies longer than about 12 cm, or 5 inches. ( 3 informal) A person who is known for betrayal; a scoundrel; a quisling.