dillweed noun2 •Dill, an aromatic herb used in cooking and medicine; Anethum graveolens.Vinegar and Pickles (kraut, cucumber, dillweed, tomato, cauliflower and onion). — 1909 •(slang, disapproving) A contemptible person; a fool....they have been exchanging insults in writing: "dickhead," "dillweed," "fuzzbutt," "dorkwad," "asswipe," and so forth. — 1996 formsdillweeds