Sĭgĭl-lā'ri-ă, n. pl.

n. pl. [N. Lat., from sigillum, a seal. See supra.]

1. (Rom. Antiq.) Little images or figures of earthen-ware exposed for sale, or given as presents, on the last two days of the Saturnalia; hence, the last two, or sixth and seventh, days of the Saturnalia.
2. (Paleon.) The large trunks of fossil trees, having an unjointed stem, marked with notches;—principally found in the coal formation. Dana.