Noun
1. the principal activity in your life that you do to earn money;
"he's not in my line of business"2. the control of a country by military forces of a foreign power
3. any activity that occupies a person's attention;
"he missed the bell in his occupation with the computer game"4. the act of occupying or taking possession of a building;
"occupation of a building without a certificate of occupancy is illegal"5. the period of time during which a place or position or nation is occupied;
"during the German occupation of Paris"