Merriam-Webster's Collegiate® Dictionary, 11th Edition
ADVENTURE
I. noun see: come
Date: 14th century
1. an undertaking usually involving danger and unknown risks, the encountering of risks , an exciting or remarkable experience , an enterprise involving financial risk,
II. verb (adventured; adventuring)
Date: 14th century
transitive verb to expose to danger or loss ; venture , to venture upon ; try , intransitive verb to proceed despite risk, to take the risk