Illustrated Companion to the Latin Dictionary/Postis

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

POSTIS (παραστάς, σταθμός). The jamb of a door case; i. e. an upright pillar, or a post, one of which is placed on each side of a door-way resting upon the sill and supporting the lintel overhead, as shown by the annexed cut (Postis/1.1) representing a stone door-case, now remaining in one of the streets of Pompeii. Cic. Att. iii. 15. Ov. Am. ii. 1. 27. Val. Max. ix. 12. 6. Vitruv. iv. 6.

2. The poets apply the word in a more definite sense; sometimes using it for the door itself (foris), or one of its valves, or for the style (scapus cardinalis) forming the pivot (cardo) on which the leaf revolved.

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  Postis/1.1