| fraxinella | (n) Eurasian perennial herb with white flowers that emit flammable vapor in hot weather, Syn. burning bush, gas plant, Dictamnus alba, dittany |
| fraxinus | (n) ash, Syn. genus Fraxinus |
| arizona ash | (n) small shrubby ash of southwestern United States and northwestern Mexico, Syn. Fraxinus velutina |
| black ash | (n) vigorous spreading North American tree having dark brown heavy wood; leaves turn gold in autumn, Syn. Fraxinus nigra, basket ash, brown ash, hoop ash |
| blue ash | (n) ash of central and southern United States with bluish-green foliage and hard brown wood, Syn. Fraxinus quadrangulata |
| caucasian walnut | (n) medium-sized Caucasian much-branched tree distinguished from other walnut trees by its winged fruit, Syn. Pterocarya fraxinifolia |
| european ash | (n) tall ash of Europe to the Caucasus having leaves shiny dark-green above and pale downy beneath, Syn. common European ash, Fraxinus excelsior |
| flowering ash | (n) shrubby California ash with showy off-white flowers, Syn. Fraxinus dipetala |
| flowering ash | (n) shrubby ash of southwestern United States having fragrant white flowers, Syn. Fraxinus cuspidata |
| goncalo alves | (n) tall tropical American timber tree especially abundant in eastern Brazil; yields hard strong durable zebrawood with straight grain and dark strips on a pinkish to yellowish ground; widely used for veneer and furniture and heavy construction, Syn. Astronium fraxinifolium |
| green ash | (n) a variety of red ash having glossy branchlets and lower leaf surfaces, Syn. Fraxinus pennsylvanica subintegerrima |
| manna ash | (n) southern Mediterranean ash having fragrant white flowers in dense panicles and yielding manna, Syn. flowering ash, Fraxinus ornus |
| mountain ash | (n) low-growing ash of Texas, Syn. Fraxinus texensis |
| oregon ash | (n) timber tree of western North America yielding hard light wood; closely related to the red ash, Syn. Fraxinus latifolia, Fraxinus oregona |
| pumpkin ash | (n) timber tree of central and southeastern United States having hairy branchlets and a swollen trunk base, Syn. Fraxinus tomentosa |
| red ash | (n) smallish American tree with velvety branchlets and lower leaf surfaces, Syn. Fraxinus pennsylvanica, downy ash |
| shingle tree | (n) East Indian timber tree with hard durable wood used especially for tea boxes, Syn. Acrocarpus fraxinifolius |
| swamp ash | (n) small ash of swampy areas of southeastern United States, Syn. Fraxinus caroliniana |
| toothache tree | (n) small deciduous aromatic shrub (or tree) having spiny branches and yellowish flowers; eastern North America, Syn. Zanthoxylum fraxineum, sea ash, Zanthoxylum americanum |
| white ash | (n) spreading American ash with leaves pale green or silvery beneath and having hard brownish wood, Syn. Fraxinus Americana |
| white mountain ash | (n) large tree with dark compact bark on lower trunk but smooth and white above; yields lumber similar to that of European or American ashes, Syn. Eucalyptus fraxinoides |