WordWeb Online

1. Any of various long-tailed rodents similar to but larger than a mouse
    
2. Someone who works (or provides workers) during a strike
   - scab, strikebreaker, blackleg [Brit]
    
3. A person who is deemed to be despicable or contemptible
   "kill the rat";
   - rotter, dirty dog, skunk, stinker, stinkpot, bum [N. Amer], crumb, lowlife, scumbag, so-and-so, git [Brit], sleazeball, slimebag, scuzzbag [N. Amer], scuzzbucket [N. Amer], ratbag [Brit], sleazebag, scuzz [N. Amer], toad, scuzzball [N. Amer], dirtbag [US], slimeball
    
4. One who reveals confidential information to the police or other authority
   "The mafia liquidated the rat";
   - informer, betrayer, squealer, blabber
    
5. A pad (usually made of hair) worn as part of a woman's coiffure

1. Desert one's party or group of friends, for example, for one's personal advantage
    
2. (industry) employ scabs or strike breakers in
    
3. Take the place of work of someone on strike
   - fink [N. Amer], scab, blackleg [Brit]
    
4. Give (hair) the appearance of being fuller by using a rat
    
5. Catch rats, especially with dogs
    
6. Give away information about somebody
   - denounce, tell on, betray, give away, grass, shop, snitch, stag, squeak

Derived forms: rats, ratted, ratting

Type of: capture, catch, defect, desert, disagreeable person, do work, employ, engage, fill out, gnawer, hire, inform, informant, pad, rodent, source, unpleasant person, work, worker

Part of: coif, coiffure, hair style, hairdo, hairstyle

Encyclopedia: Rat