Thunder/ˈθʌndər/ Definition 1 of 3Pro Tip 1/3After Lightning Thunder follows lightning; use it to describe timing within storms. We saw the flash, then heard the thunder seconds later. Pro Tip 2/3Symbol of Power Used metaphorically to convey a show of strength or a powerful event. The leader's speech came like thunder, inspiring awe in the crowd. Pro Tip 3/3Fear or Excitement Thunder can evoke different emotions, like fear in some and thrill in others. Despite the intense thunder, the children were thrilled by the storm.