What is "suwa'"

Suwa' (Arabic سواع) is mentioned in the Qur'an (71:23) as a deity of the time of the Prophet Noah.

And they say: By no means leave your gods, nor leave Wadd, nor Suwa'; nor Yaghuth, and Ya'uq and Nasr. ( Qur'an 71:23)

The temple dedicated to Suwa was demolished on the orders of Muhammad, in the Raid of Amr ibn al-As, in January 630 AD, 8AH, 9th month, of the Islamic Calendar.