بص

[ بَصٌّ بص , and بَصُّ نَارٍ, Live coals; because they shine, or glisten: n. un. with ة: so in the present day; but probably only post-classical: or, accord. to the TA, in art. بصو, the word بَصَّةٌ is used by the vulgar, for بَصْوَةٌ.]