small bushy deciduous tree native to Asia and North Africa having pretty pink blossoms and highly prized edible nuts enclosed in a hard green hull; cultivated in southern Australia and California
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"
(used to introduce a logical conclusion) from that fact or reason or as a result; "therefore X must be true"; "the eggs were fresh and hence satisfactory"; "we were young and thence optimistic"; "it is late and thus we must go"; "the witness is biased and so cannot be trusted"
(law) an explanation of the fundamental reasons (especially an explanation of the working of some device in terms of laws of nature); "the rationale for capital punishment"; "the principles of internal-combustion engines"