indexical

/ɪnˈdɛksɪkəl/
adjective
  1. Relating to or functioning as an index; pointing to or indicating something, especially in language or signs.
    • In linguistics, words like 'here' and 'now' are indexical because their meaning depends on context.
    • Smoke is indexical of fire, as it directly indicates the presence of flames.
    • The indexical nature of a pointing finger makes it a universal gesture.
What does "indexical" mean? | whatsthatwordmean | whatsthatwordmean