RATTER
deserter, apostate, renegade, turncoat, recreant, ratter
(noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
Source: WordNet® 3.1
Etymology
Noun
ratter (plural ratters)
Anything which catches rats, especially a dog trained to catch them; a rat terrier.
One who rats; a traitor; a deserter.
Anagrams
• Tarter, tarter
Proper noun
Ratter
A surname.
Anagrams
• Tarter, tarter
Source: Wiktionary
Rat"ter, n.
1. One who, or that which, rats, as one who deserts his party.
2. Anything which catches rats; esp., a dog trained to catch rats; a
rat terrier. See Terrier.
Source: Webster’s Unabridged Dictionary 1913 Edition