Caliver: Light kind of musket or harquebus introduced during the 16th century; it seems to have been the lightest portable fire-arm, except the pistol, and was fired without a "rest." [King Henry IV, Part 1]
Callet: Whore. [Othello]
Cank'red, cankered: Rusty, malignant (a canker is a bud-destroying worm; hence cancer). [Romeo and Juliet]
Cantons: Love songs (cantos). [Twelfth Night]
Cap-a-pe: Fully armed from head to foot. [Hamlet]
Carded: Mixed with something base. The word was in use from 1590 to 1635 for mixing different kinds of drink. [King Henry IV, Part 1]
Carrion men: Decaying corpses. [Julius Caesar]
Carrions: Living carcasses. [Julius Caesar]
Cashiered: Dismissed (but not necessarily without honor). [Othello]
Casing: All-embracing. [Macbeth]
Catch: Musical round. [Twelfth Night]
Cater-cousins: Close friends. [The Merchant of Venice]
Caterwauling: Making a wailing noise like a cat. From Middle English cat + wawen, to wail (an onomatopoetic word, whose sound echoes its meaning). [Twelfth Night]
Cautel: Craft. [Hamlet]
Cerecloth: Shroud. [The Merchant of Venice]
Cerements: Winding-sheets, shroud. [Hamlet]
Certes: Assuredly. [Othello]
Chafing with: Beating on. [Julius Caesar]
Chalked forth: Indicated the direction. [The Tempest]
D
Dallying: Fondling one another. [Hamlet]
Date is out, the: It is no longer the fashion. [Romeo and Juliet]
Dateless: Everlasting. [Romeo and Juliet]
Daws: Jackdaws, or fools. [Othello]
Dear account: Sad reckoning. In Elizabethan English the word "dear" intensified the meaning -- you could have a "dear friend" and a "dear enemy." [Romeo and Juliet]
Death's-head: Skull. [The Merchant of Venice]
Denotement: Careful observation. [Othello]
Dilate: Tell fully. [Othello]
Dismount thy tuck: Take thy rapier out of its scabbard or sheath. [Twelfth Night]
Dissemble: Deceive. [Twelfth Night]
Distaff: The spinning staff, and hence symbol of the woman. [King Lear]
Distemperature: Illness or other physical disorder. [King Henry IV, Part 1]
Do my duties: Voice my loyalty. [Othello]
Dog at: Clever at. [Twelfth Night]
Doit: Cheap coin. [The Merchant of Venice]
Dormouse valour: Small amount of bravery. [Twelfth Night]
Doublet: Lined jacket. [King Henry IV, Part 1]
Doves: The Chariot of Venus was drawn by doves, which were sacred to her. [Romeo and Juliet]
Down-gyved: Fallen, like shackles, about the ankles. [Hamlet]