Webster's Revised Unabridged Dictionary · 1913

Hieroglyphic

Hieroglyphic , adjective

[Latin hieroglyphicus, Greek {not transcribed}; "iero`s sacred + gly`fein to carve: compare French hiéroglyphique.]

1.
Emblematic; expressive of some meaning by characters, pictures, or figures; as, hieroglyphic writing; a hieroglyphic obelisk.
Pages no better than blanks to common minds, to his, hieroglyphical of wisest secrets. — Prof. Wilson
2.
Resembling hieroglyphics; not decipherable.
An hieroglyphical scrawl. — Sir W. Scott
3.
of or pertaining to hieroglyphs.

Also: Hieroglyphical