そそり立つ
  聳り立つ
  そそりたつ
  Godan verb with `tsu' ending
  intransitive verb
  to rise (steeply)
  to tower
  to soar
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  そそり勃つ
  そそりたつ
  Godan verb with `tsu' ending
  intransitive verb
  see: そそり立つ・そそりたつ
  [pun on そそり立つ]
  to become erect (penis, nipple, etc.)
  to tower (like an erection)
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