Definition of octofoil in English:

octofoil

adjective

  • Having or consisting of eight leaves or lobes.

    • ‘The candle socket, octofoil in outline, is formed of square fluting.’

noun

  • An octofoil ornamental or heraldic figure.

    • ‘Thus the ninth son of a ninth son would place an octofoil upon an octofoil.’
    • ‘Block 18 is of whiter material, probably a sandstone, badly eroded, and contains the remains of an octofoil, with hollow center.’

Origin

Mid 19th century: from octo- eight, on the pattern of words such as trefoil.

Pronunciation:

octofoil

/ˈɒktə(ʊ)fɔɪl/