OPERCULUM, a cover, lid, or dish with a cover

Opossum, ℞ [396]

ORIGANUM MARJORANA, marjoram; —— origany; —— VINUM, wine flavored with O.

ORYZA, rice, rice flour; see [RISUM]

OSPREON, OSPREOS, OSPRION, legumes, Title of Book [V]

Ostia, town, harbor of Rome; the OFFELLAE OSTIENSIS, ℞ [261], are the ancient “Hamburgers”; this seems to confirm the assumption that the population of sea-port towns have a preference for meat balls

OSTREA, oyster, ℞ [15], [410]; —RIUM, oyster bed or pit, or place for keeping oysters

Ostrich, ℞ [210-11]

Oval pan, illustration, p. [159]

Oval service dish, p. [43]