a chess move constituting an inescapable and indefensible attack on the opponent's king
complete victory
place an opponent's king under an attack from which it cannot escape and thus ending the game; "Kasparov checkmated his opponent after only a few moves"
the capacity for rational thought or inference or discrimination; "we are told that man is endowed with reason and capable of distinguishing good from evil"
a fact that logically justifies some premise or conclusion; "there is reason to believe he is lying"
an explanation of the cause of some phenomenon; "the reason a steady state was never reached was that the back pressure built up too slowly"
a rational motive for a belief or action; "the reason that war was declared"; "the grounds for their declaration"
think logically; "The children must learn to reason"
decide by reasoning; draw or come to a conclusion; "We reasoned that it was cheaper to rent than to buy a house"
(Christianity) the act of mortifying the lusts of the flesh by self-denial and privation (especially by bodily pain or discomfort inflicted on yourself)
being or characterized by concepts or their formation; "conceptual discussions"; "the schizophrenic loses ability to abstract or do conceptual thinking"; "sex is a notional category, gender is a grammatical category"
indistinctness of shape or character; "the scene had the swirling vagueness of a painting by Turner"
unclearness by virtue of being poorly expressed or not coherent in meaning; "the Conservative manifesto is a model of vagueness"; "these terms were used with a vagueness that suggested little or no thought about what each might convey"
throw into great confusion or disorder; "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"
disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill"
cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull; "The orbits of these stars were perturbed by the passings of a comet"
disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion"
happening or arising or located within some limits or especially surface; "internal organs"; "internal mechanism of a toy"; "internal party maneuvering"
occurring within an institution or community; "intragroup squabbling within the corporation"
the faculty through which the external world is apprehended; "in the dark he had to depend on touch and on his senses of smell and hearing"
a general conscious awareness; "a sense of security"; "a sense of happiness"; "a sense of danger"; "a sense of self"
a natural appreciation or ability; "a keen musical sense"; "a good sense of timing"
the meaning of a word or expression; the way in which a word or expression or situation can be interpreted; "the dictionary gave several senses for the word"; "in the best sense charity is really a duty"; "the signifier is linked to the signified"
comprehend; "I sensed the real meaning of his letter"
become aware of not through the senses but instinctively; "I sense his hostility"
detect some circumstance or entity automatically; "This robot can sense the presence of people in the room"; "particle detectors sense ionization"