astragal

 
Pronunciation: /ˈastrəg(ə)l/

noun

  • 1a moulding or wooden strip of semicircular cross section.
  • Architecture a narrow semicircular moulding round the top or bottom of a column.
  • 2a bar separating panes of glass in cabinetmaking.

Origin:

mid 17th century: from astragalus, partly via French astragale