definition of
occasion

[1] #1 occasion n. [juncture] an event that occurs at a critical time; "at such junctures he always had an impulse to leave"; "it was needed only on special occasions". wn

[2] #2 occasion n. [affair, social occasion, function, social function] a vaguely specified social event; "the party was quite an affair"; "an occasion arranged to honor the president"; "a seemingly endless round of social functions". wn

[3] #3 occasion v. give occasion to. wn

[4] #4 occasion n. reason; "there was no occasion for complaint". wn

[5] #5 occasion n. the time of a particular event; "on the occasion of his 60th birthday". wn