increased pressure in the eyeball due to obstruction of the outflow of aqueous humor; damages the optic disc and impairs vision (sometimes progressing to blindness)
a spot that is open late at night and that provides entertainment (as singers or dancers) as well as dancing and food and drink; "don't expect a good meal at a cabaret"; "the gossip columnist got his information by visiting nightclubs every night"; "he played the drums at a jazz club"
an obstruction that stands in the way (and must be removed or surmounted or circumvented)
something immaterial that stands in the way and must be circumvented or surmounted; "lack of imagination is an obstacle to one's advancement"; "the poverty of a district is an obstacle to good education"; "the filibuster was a major obstruction to the success of their plan"