a lump or mass of hard consolidated mineral matter; "he threw a rock at me"
(figurative) someone who is strong and stable and dependable; "he was her rock during the crisis"; "Thou art Peter, and upon this rock I will build my church"--Gospel According to Matthew
United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
material consisting of the aggregate of minerals like those making up the Earth's crust; "that mountain is solid rock"; "stone is abundant in New England and there are many quarries"
move back and forth or sideways; "the ship was rocking"; "the tall building swayed"; "She rocked back and forth on her feet"
cause to move back and forth; "rock the cradle"; "rock the baby"; "the wind swayed the trees gently"
any recognized accomplishment; "they admired his performance under stress"; "when Roger Maris powered four home runs in one game his performance merits awe"
the act of performing; of doing something successfully; using knowledge as distinguished from merely possessing it; "they criticised his performance as mayor"; "experience generally improves performance"
the act of presenting a play or a piece of music or other entertainment; "we congratulated him on his performance at the rehearsal"; "an inspired performance of Mozart's C minor concerto"
a dramatic or musical entertainment; "they listened to ten different performances"; "the play ran for 100 performances"; "the frequent performances of the symphony testify to its popularity"
based on or having the nature of an illusion; "illusive hopes of finding a better job"; "Secret activities offer presidents the alluring but often illusory promise that they can achieve foreign policy goals without the bothersome debate and open decision that are staples of democracy"
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations; "in England they call a period a stop"
the end or completion of something; "death put a period to his endeavors"; "a change soon put a period to my tranquility"
a unit of geological time during which a system of rocks formed; "ganoid fishes swarmed during the earlier geological periods"
one of three periods of play in hockey games
the interval taken to complete one cycle of a regularly repeating phenomenon
a stage in the history of a culture having a definable place in space and time; "a novel from the Victorian period"
a single written symbol that represents an entire word or phrase without indicating its pronunciation; "7 is a logogram that is pronounced `seven' in English and `nanatsu' in Japanese"