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