cat 
(kăt)
(kăt)n.
1.
a. A small domesticated carnivorous mammal (Felis catus), kept as a pet and as catcher of vermin, and existing in a variety of breeds.
b. Any of various other carnivorous mammals of the family Felidae, including the lion, tiger, leopard, and lynx.
2. Informal A woman who is regarded as spiteful.
3. Slang
a. A person, especially a man.
b. A player or devotee of jazz music.
4. A cat-o'-nine-tails.
5. A catfish.
6. Nautical
a. A cathead.
b. A device for raising an anchor to the cathead.
c. A catboat.
d. A catamaran.
v. cat·ted, cat·ting, cats
v.tr.
Nautical
Nautical
To hoist an anchor to (the cathead).
v.intr.
Slang
Idiom: Slang
To look for sexual partners; have an affair or affairs: "catting around with every lady in sight" (Gore Vidal).
let the cat out of the bag
To let a secret be known.
[Middle English, from Old English catt, from Germanic *kattuz; akin to Late Latin cattus and Old Church Slavonic kotŭka, all ultimately of unknown origin. Sense 6d, short for CATAMARAN.]