To multiply by three. / (baseball) To get a three-base hit. / To become three times as large. / To serve or operate as (something), in addition to two other functions.

In three parts. / Done by three parties (as an agreement).

The lining of the large stomach of ruminating animals, when prepared for food. / (chiefly in the plural) The entrails; hence, humorously or in contempt, the belly.

(derogatory) That (what has just been said) is untrue.

(art) A picture or series of pictures painted on three tablets connected by hinges. / (philately) A set of three se-tenant postage stamps that form a composite picture.

(physics) The unique temperature and pressure at which the solid, liquid and gas phases of a substance are all in equilibrium.

(chemistry) A covalent bond in which three electron pairs (instead of the usual one) are shared between two atoms; most common between carbon atoms and carbon or nitrogen atoms, but a few other forms are known. Symbolized in formulae as ≡.

(geology) A sedimentary rock composed of the shells of diatoms etc., used for polishing.

(music) A group of three notes played or written where two notes would ordinarily be; a form of tuplet. / (physics) A triquark. / (physics) A quantum state with three allowed projections for the spin.

(baseball) A defensive play in which three outs are recorded. / An offering of three bundled services, especially telephone, television and broadband Internet.