[ahm-puh-nahzh, em-; French ahn-pe-nazh]
noun, plural empennages [ahm-puh-nah-zhiz, em-; French ahn-pe-nazh] .
the rear part of an airplane or airship, usually comprising the stabilizer, elevator, vertical fin, and rudder.

1905–10; < French: literally, feathering, equivalent to empenn(er) to feather an arrow (em- em-1 + -penner, derivative of penne feather; see pen1) + -age -age

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World English Dictionary
empennage (ɛmˈpɛnɪdʒ, French ɑ̃pɛnaʒ)
the rear part of an aircraft, comprising the fin, rudder, and tailplane
[C20: from French: feathering, from empenner to feather an arrow, from penne feather, from Latin pinna]

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