portance

[pawr-tns, pohr-]

noun Archaic.

Origin of portance

From Middle French, dating back to 1580–90; see origin at port⁵, -ance

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Rymer, in his criticism on this play, has changed it to portents, instead of portance.
Notes to Shakespeare, Volume III: The Tragedies
Samuel Johnson