blockheadess

Noun

 * 1)  A female blockhead.
 * 2) * 1827, Lady Morgan, The O'Briens and the O'Flahertys, Volume 4, p. 360 (Google Books view):
 * "If I did, every body would say I put them into my book," said the Princess, "for all the blockheads and blockheadesses think themselves printable; and draw what you may, 'each cries that was levelled at him.'"