from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. An important daily prayer that is said while standing.
from The Century Dictionary and Cyclopedia
- n. The most solemn prayer in the Jewish liturgy, also known as the shemonah 'esra (‘eighteen blessings’). It is repeated thrice daily, sotto voce, while standing.
From Hebrew תְּפִלַּת־הָעֲמִידָה (t'filát ha'amidá, "the standing prayer"). (Wiktionary)