1. (n.) A figure bounded by three lines, and containing three angles.

2. (n.) An instrument of percussion, usually made of a rod of steel, bent into the form of a triangle, open at one angle, and sounded by being struck with a small metallic rod.

3. (n.) A draughtsman's square in the form of a right-angled triangle.

4. (n.) A kind of frame formed of three poles stuck in the ground and united at the top, to which soldiers were bound when undergoing corporal punishment, -- now disused.

5. (n.) A small constellation situated between Aries and Andromeda.

6. (n.) A small constellation near the South Pole, containing three bright stars.

Platonic body T square acute-angled triangle adulterous affair adultery affair amour battery bell bells bones branks castanets celesta chime chimes church bell clapper clappers clover cowbell crank crash cymbal cube cuboid cucking stool cuckoldry cusp cymbals decagon deuce-ace dinner bell dinner gong dodecagon dodecahedron doorbell ducking stool entanglement equilateral triangle eternal triangle finger cymbals finger pillory fire bell flirtation forbidden love foursquare gamelan glockenspiel gnomon gong gong bell hand bell handbells hanky-panky heptagon hexagon hexahedron hypercube icosahedron idiophone illicit love infidelity intrigue isosceles triangle jingle bell leash liaison love affair lyra maraca marimba metallophone oblong obtuse-angled triangle octagon octahedron orchestral bells oxygon parallelepiped parallelogram passing bell pentagon pentahedron percussion percussion instrument percussions percussive pillory polygon polyhedron prism prismoid pyramid quadrangle quadrant quadrature quadrilateral rattle rattlebones rectangle rhombohedron rhomboid rhombus romance romantic tie rule ruler sacring bell set of three shamrock sheepbell sizzler sleigh bell snappers square stocks straightedge tam-tam telephone bell tercet ternary ternion terzetto tetragon tetragram tetrahedron three threesome tierce tintinnabula tintinnabulum tongue tonitruone trapeze trapezium trapezoid treadmill trebuchet trefoil trey triad trialogue triangles tricorn trident triennium trihedron trilateral trilogy trimester trine trinity trinomial trio triphthong triple crown triple threat triplet triplopy tripod triptych trireme triseme triskelion trisul triumvirate triunity trivet troika tubular bells unfaithfulness vibes vibraphone whipping post wooden horse xylophone