a risk or peril
a source of danger
a fire hazard
chiefly archaic or literary chance; accident; uncertainty
You therein … give up yourself merely to chance and hazard from firm security — Shakespeare
a golf-course obstacle, e.g. a bunker
a game of chance played with two dice
in billiards, a stroke that pockets a ball, a winning hazard being the pocketing of the object ball, and a losing hazard the pocketing of the cue ball off another ball
in real tennis, each of the winning openings in a court
We will in France … play a set shall strike his father's crown into the hazard — Shakespeare
[Middle English via French from Arabic az-zahr the die]