The Tower: tarot meaning, upright and reversed

Lightning strikes a crowned tower as figures fall and sparks scatter through the dark.
Upright
rupture · exposure
An unstable arrangement is being exposed or broken. Respond to what the disruption makes unmistakable.
Reversed
delayed rupture · contained upheaval
A feared break may be postponed or experienced inwardly; the underlying fault still needs attention.
In a reading
The position gives this card a particular task: a description of the situation, a challenge, or guidance. Read its image and meaning alongside the other cards and the question that brought them together.
Golden Dawn correspondence
Planet: Mars. This is the attribution in Book T.
Sources
A. E. Waite, The Pictorial Key to the Tarot. These notes are original interpretations of the Waite–Smith imagery, informed by that text.