Breadcrumb Home > Dictionary > Index O observation post: Meaning and Definition of Find definitions for: observa'tion post" Pronunciation: [key] — Mil. Mil. a forward position, often on high ground, from which enemy activity can be observed and, particularly, from which artillery or mortar fire can be directed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. observation car observatory ✖ Related Content Daily Word Quiz: restive Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language