dick

Etymology 1

Ultimately from Dick, pet form of the name Richard. The name Dick came to mean "everyman", whence the word acquired its other meanings.

noun

1. (countable, obsolete) A male person.
2. (countable, slang) A detective, esp. the one who works in police, a police officer.
3. (countable and uncountable, vulgar, slang) The penis.
   THINGS YOU NEVER HEAR: "Please stop sucking my dick or I'll call the police." 1997, George Carlin, Brain Droppings, New York: Hyperion Books, →LCCN, →OCLC, →OL, page 83
4. (countable, Britain, US, Ireland, Australia, New Zealand, vulgar, slang, derogatory) A highly contemptible person; a jerk.
   That person is such a dick.
5. (uncountable, US, Canada, vulgar, slang, uncommon) Absolutely nothing.
   Last weekend I did dick.
   Cool, whatever you say, slick, but I need to tell you something about all your skills. As of right now, they mean precisely… dick. 1997, Ed Solomon, Men in Black, spoken by Agent K (Tommy Lee Jones)
6. (uncountable, vulgar, slang) Sexual intercourse with a man.
   You better try and get some dick and take your mind off this bullshit. 1991, quoted in Andrew Parker, Nationalisms & Sexualities, page 309
   Much like quicksand, dicksand is what girls get caught in when they're obsessed with their crush, boyfriend, husband, or anyone giving them dick. 2020, Keltie Knight, Becca Tobin, Jac Vanek, Act Like a Lady[…], Rodale Books, page 284

verb

1. (transitive, slang, vulgar) To mistreat or take advantage of somebody (often with around or up).
   Dude, don't let them dick you around like that!
2. (transitive, slang, vulgar, of a man) To penetrate sexually.
   Listen, this old gal we going to see probably don't like liquor and drinking, so be cool. I'm just gon borrow a few bucks off her. I ain't never dicked her or nothing. 1996, Clarence Major, Dirty bird blues

Etymology 2

A shortening and alteration of de(t)ec(tive).

noun

1. (dated, US, slang) A detective.
   private dick, railroad dick
   “I am a detective,” said Hercule Poirot with the modest air of one who says “I am a king.” “Good God!” The young man seemed seriously taken aback. “Do you mean that girl actually totes about a dumb dick?” 1937-11-01, Agatha Christie, Death on the Nile

Etymology 3

A shortening and alteration of dec(laration).

noun

1. (obsolete) A declaration.
   "He seems to set a deal of store by her, though. There's some young 'ooman at home, where she lives, I'd take my dying dick." 1875, Mrs. George Croft Huddleston, Bluebell

Etymology 4

From a Cumbric numeral corresponding to Welsh deg, from Proto-Brythonic *deg.

num

1. (Cumbria) Ten, in Cumbrian sheep counting.