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spiny anteater the echidna.
spiny-finned having fins that are supported by spinelike, bony rays.
spiny lobster any of several edible crustaceans having a spiny shell and lacking the large pincers of the true lobsters.
spiracle an opening or hole that allows for the passage of air for breathing or ventilation; air hole. [3 definitions]
spiral a curve that begins from and continues to form a circle around a fixed point and that constantly increases or decreases in distance from it, in either a flat or a three-dimensional plane; coil or helix. [6 definitions]
spirant in phonetics, a consonantal speech sound produced by the breath pushed through the constricted opening of the mouth and lips, as the "sh" or "v" sound in English; fricative. [2 definitions]
spire1 a tall, narrow, cone-shaped roof or upward projection on a building or outer wall; steeple; pinnacle. [3 definitions]
spire2 a spiral or helix. [2 definitions]
spirea any of several shrubs related to the roses and bearing small clusters of small pink or white flowers.
spirillum any of several spiral-shaped, aerobic bacteria having flagella, or any of various other related organisms.
spirit the vital force that is thought to be an element of human beings; soul. [12 definitions]
spirited full of vigor, courage, or enthusiasm.
spirit gum a special type of glue used in the theater to fasten false hair or whiskers to an actor's face.
spiritism spiritualism.
spiritless having no spirit. [2 definitions]
spirit level a device for determining a true horizontal or vertical plane, as in carpentry; level.
spiritous of, resembling, or containing alcohol; spirituous.
spirits a person's general feeling of emotion at a certain time.
spirits of ammonia a solution of ammonia in alcohol and water, often with other aromatic agents.
spiritual of, pertaining to, or made up of spirit, rather than the physical body or world. [6 definitions]
spiritualism the belief or theory that the dead can and do communicate with those still living, as through mediums. [3 definitions]