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trick-or-treat to engage in the Halloween tradition of visiting neighbors while wearing a costume and requesting candy or other treats by saying the words "trick or treat!"
trickster one who deceives, cheats, or plays tricks.
tricksy full of tricks; mischievous; prankish.
tricky given to or marked by deception or trickery; wily. [2 definitions]
triclinic of or designating a system of crystallization in which three unequal axes intersect at oblique angles.
tricolor having three colors. [2 definitions]
tricorn having three horns, hornlike projections, or corners; three-cornered. [2 definitions]
tricot a plain warp-knit fabric such as nylon or polyester, used esp. for underwear. [2 definitions]
tricuspid having three points or cusps, as a tooth. (Cf. bicuspid.) [3 definitions]
tricycle a three-wheeled vehicle usually ridden by pushing pedals with one's feet.
trident a fishing or fighting spear with three prongs, sometimes shown in portrayals of Greek and Roman sea gods.
tridentate having three teeth, toothlike projections, or parts.
tried past tense and past participle of try. [3 definitions]
triennial happening every three years. [3 definitions]
trier a person or thing that tries, samples, or tests.
trifacial see trigeminal.
trifid divided or cleft into three distinct lobes, as the leaves of certain plants.
trifle something that has very little value or importance. [6 definitions]
trifling of little importance, meaning, or value; slight; trivial. [2 definitions]
trifocal of eyeglasses, having three lenses of different focal lengths. [2 definitions]
trifoliate having three leaves, leaflets, lobes, or the like. [2 definitions]