['epistail]
n.
[建]柱顶过梁

Epistyle \Ep"i*style\, n. [L. epistylium, Gr. ?; 'epi` upon + ?
column: cf. F. ['e]pistyle.] (Anc. Arch.)
A massive piece of stone or wood laid immediately on the
abacus of the capital of a column or pillar; -- now called
{architrave}.