name

• (chiefly uncountable) The language of France, shared by the neighboring countries Belgium, Monaco, and Switzerland and by former French colonies around the world.
  "She speaks French."
• (uncountable) The ability of a person to communicate in French.
  "My French is a little rusty."
• (uncountable) French language and literature as an object of study.
  "I'm taking French next semester."
• (uncountable, euphemistic, now often ironic) Vulgar language.
  "Pardon my French."

noun

• (chiefly collective and in the plural) The people of France; groups of French people.
  "The Hundred Years' War was fought between the English and the French."
• (uncountable, dated slang, sex) Synonym of oral sex, especially fellatio.
  "French--^([sic]) to do the French--Cocksucking; and, inversely, to tongue a woman."
• (chiefly uncountable, dated slang) Ellipsis of French vermouth, a type of dry vermouth.
  "Tearle replied that gin-and-French and virginian cigarettes would do for him."
• (countable, non-native speakers' English) A French person.

adj

• (slang, sexuality) Of or related to oral sex, especially fellatio.
  "French active"
• (informal, often euphemistic) Used to form names or references to venereal diseases.
  "French disease"

verb

• (transitive) To prepare food by cutting it into strips.
• (transitive) To kiss (another person) while inserting one’s tongue into the other person's mouth.
  "Tom frenched her full in the mouth."
• (intransitive) To kiss in this manner.
  "We frenched by the wall."
• (cooking) To French trim; to stylishly expose bone by removing the fat and meat covering it (as done to a rack of lamb or bone-in rib-eye steak).