noun

• (linguistics) The text in which a word or passage appears and which helps ascertain its meaning.
  "Without context, I can't tell if dish refers to a plate, or to the food served thereon."
• (archaeology) The surroundings and environment in which an artifact is found and which may provide important clues about the artifact's function and/or cultural meaning.
• (mycology) The trama or flesh of a mushroom.
• (logic) For a formula: a finite set of variables, which set contains all the free variables in the given formula.

verb

• (obsolete) To knit or bind together; to unite closely.
  "The whole worlds frame, which is contexted onely by commerce and contracts."

adj

• (obsolete) Knit or woven together; close; firm.
  "1541?, Robert Copland (translator?), Guydon's Questionary Chirurgical, translation of 1533, Guy de Chauliac, La questionaire des cirugiens at barbiers The skynne is composed & context and woven with thredes and vaynes."