an anatomical structure used as a point of origin in locating other anatomical structures (as in surgery) or as point from which measurements can be taken
a mark showing the boundary of a piece of land
an event marking a unique or important historical change of course or one on which important developments depend; "the agreement was a watershed in the history of both nations"
the position of a prominent or well-known object in a particular landscape; "the church steeple provided a convenient landmark"
the act of subjecting to experimental test in order to determine how well something works; "they agreed to end the testing of atomic weapons"
an examination of the characteristics of something; "there are laboratories for commercial testing"; "it involved testing thousands of children for smallpox"
(law) a formal notice filed with a court or officer to suspend a proceeding until filer is given a hearing; "a caveat filed against the probate of a will"
(law) legal proceedings consisting of the judicial examination of issues by a competent tribunal; "most of these complaints are settled before they go to trial"
(law) the determination of a person's innocence or guilt by due process of law; "he had a fair trial and the jury found him guilty"
trying something to find out about it; "a sample for ten days free trial"; "a trial of progesterone failed to relieve the pain"
an annoying or frustrating or catastrophic event; "his mother-in-law's visits were a great trial for him"; "life is full of tribulations"; "a visitation of the plague"
(sports) a preliminary competition to determine qualifications; "the trials for the semifinals began yesterday"
a volatile flammable mixture of hydrocarbons (hexane and heptane and octane etc.) derived from petroleum; used mainly as a fuel in internal-combustion engines