A seal, signature or signet. / An occult or magical sign, image or symbol. / (programming) A nonalphanumeric character affixed to a symbol (e.g. variable) to indicate a property such as type or scope.

plural of sigil

Decorated with impressed patterns. / (botany) Marked with seal-like scars.

(pottery) Decorated by means of stamps.

plural of sigillation

A sigillate pattern.

Alternative form of sigillic

Relating to occult or magical sigils.

The study of seals, especially those attached to documents.

(law, historical) A seal.