| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| aigrette | noun | The small white European heron. See Egret., A plume or tuft for the head composed of feathers, or of gems, etc., A tuft like that of the egret., A feathery crown of seed; egret; as, the aigrette or down of the dandelion or the thistle. |
| aiguille | noun | A needle-shaped peak., An instrument for boring holes, used in blasting. |
| ailantus | noun | A genus of beautiful trees, natives of the East Indies. The tree imperfectly di/cious, and the staminate or male plant is very offensive when blossom. |
| air cell | A cavity in the cellular tissue of plants, containing air only., A receptacle of air in various parts of the system; as, a cell or minute cavity in the walls of the air tubes of the lungs; the air sac of birds; a dilatation of the air vessels in insects. | |
| air cock | A faucet to allow escape of air. | |
| air hole | A hole to admit or discharge air; specifically, a spot in the ice not frozen over., A fault in a casting, produced by a bubble of air; a blowhole. | |
| airiness | noun | The state or quality of being airy; openness or exposure to the air; as, the airiness of a country seat., Lightness of spirits; gayety; levity; as, the airiness of young persons. |
| air pipe | A pipe for the passage of air; esp. a ventilating pipe. | |
| air pump | A kind of pump for exhausting air from a vessel or closed space; also, a pump to condense air or force it into a closed space., A pump used to exhaust from a condenser the condensed steam, the water used for condensing, and any commingled air. | |
| airwards | adverb | Toward the air; upward. |