Hypertext Webster Gateway: "dirigible"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Dirigible \Dir"i*gi*ble\, a.
Capable of being directed; steerable; as, a dirigible
balloon.
From WordNet (r) 1.7 (wn)
dirigible
n : a steerable self-propelled airship [syn: {airship}]
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