Definition of astragal in English:



  • 1A moulding or wooden strip of semicircular cross section.

    • ‘Each panel has attached astragal beading with curved comers topped by a beaded and fluted moulded cornice.’
    • ‘Of the 286 planes, the majority, were simple moldings like common ogees, astragals, beads, hollows and rounds.’
    1. 1.1Architecture A narrow semicircular moulding round the top or bottom of a column.
      • ‘A plain astragal ringed the column beneath its plain cap.’
      • ‘There is a thick overlapping astragal running round the columns carrying the vaults and arches.’
  • 2A bar separating panes of glass in cabinetmaking.


Mid 17th century: from astragalus, partly via French astragale.