(architecture) A tall, square, tapered, stone monolith topped with a pyramidal point, frequently used as a monument.

(typography) A symbol resembling a horizontal line or dagger used in ancient manuscripts and texts to mark doubtful or spurious words or passages, as well as to reference footnotes, indicate a person's death, or mark a death date.

(entomology, of a dragonfly) To adopt the obelisk posture; to point the tip of the abdomen towards the sun.