D defs.my
Entry 3 senses Webster, 1913

Occupation

/äkˌ-yəp-āsh'-ən/ · Oc·cu·pa·tion · IPA /ˌɑkjʊˈpeɪʃən/
01 n. The act or process of occupying or taking possession; actual possession and control; the state of being occupied; a holding or keeping; ten…
  1. 1.
    The act or process of occupying or taking possession; actual possession and control; the state of being occupied; a holding or keeping; tenure; use; as, the occupation of lands by a tenant.
  2. 2.
    That which occupies or engages the time and attention.
  3. 3.
    The principal business of one's life; the principal work by which one earns one's livelihood; vocation; employment; profession; calling; trade; avocation; as, these days many people continue to practice their occupation well into their seventies.
    “Absence of occupation is not rest.” Cowper.
Phrases & compounds
Occupation bridge — a bridge connecting the parts of an estate separated by a railroad, a canal, or an ordinary road.