Alternative form of Texas 42

(physics) An artificially produced radioactive isotope of potassium, ⁴²₁₉K, having a half-life of 12.4 hours; used in medicine as a tracer

(physics) A minor stable isotope of calcium, ⁴²₂₀Ca, having twenty protons and twenty-two neutrons; it amounts to about 0.6% of the element in nature

A game played with a set of common double-six dominoes.

A particular type of monohull dinghy with two sails, designed for two people.

(slang, especially Canada, US) Pertaining to the consumption of cannabis or to cannabis culture.

(slang, especially Canada, US) Cannabis.

plural of 420

Abbreviation of forty-second.