| antenna | (noun) one of a pair of mobile appendages on the head of e.g. insects and crustaceans; typically sensitive to touch and taste | Synonyms: feeler |
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| (noun) an electrical device that sends or receives radio or television signals | Synonyms: aerial, transmitting aerial |
| (noun) sensitivity similar to that of a receptor organ | Synonyms: feeler |
| decennary | (noun) a period of 10 years | Synonyms: decade, decennium |
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| duenna | (noun) a woman chaperon | - |
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| empennage | (noun) the rear part of an aircraft | Synonyms: tail, tail assembly |
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| henna | (noun) a reddish brown dye used especially on hair | - |
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| pennant | (noun) a long flag; often tapering | Synonyms: pennon, streamer, waft |
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| (noun) a flag longer than it is wide (and often tapering) | - |
| (noun) the award given to the champion | Synonyms: crown |
| perennation | (noun) the process of living through a number of years (as a perennial plant) | - |
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| senna | (noun) any of various plants of the genus Senna having pinnately compound leaves and showy usually yellow flowers; many are used medicinally | - |
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| sienna | (noun) an earth color containing ferric oxides; used as a pigment | - |
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