accident
ac•ci•dent (ak´sədənt) n.
[[ME < OFr < L accidens, prp. of accidere, to fall upon, happen < ad-, to + cadere, to fall: see case1]]
1 a happening that is not expected, foreseen, or intended
2 an unpleasant and unintended happening, sometimes resulting from negligence, that results in injury, loss, damage, etc.
3
a) a collision involving a motor vehicle
b) the wreckage, etc. at the scene of such a collision
4 fortune; chance
5 an attribute or quality that is not essential
6 Geog., Geol. an irregular formation
7 Law an unforeseen event that occurs without anyone's fault or negligence
