abatis or abattis /abˈə-tis, ə-batˈē or -is/ (fortification)

1. A rampart of felled trees with branches outward
2. A similar arrangement of barbed wire

• operative
• operatively
• operativeness
• operativenesses
• operatives
• operative words
• operator
• operators
• opercula
• opercular
• operculate
• operculated
• operculum
• opere citato
• operetta
• operettas
• operettist
• operettists
• operon
• operons
• operose
• operosely
• operoseness
• operosenesses
• operosities