occupy

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To fill up (time or space): a lecture that occupied three hours.
2. v. To dwell or reside in.
3. v. To hold or fill (an office or position).
4. v. To seize possession of and maintain control over by or as if by conquest.
5. v. To engage or employ the attention or concentration of: occupied the children with coloring books.

Century Dictionary and Cyclopedia

1. To take possession of and retain or keep; enter upon the possession and use of; hold and use; especially, to take possession of (a place as a place of residence, or in warfare a town or country) and become established in it.
2. To take up, as room or space, or attention, interest, etc.; cover or fill; engross: as, to occupy too much space; to occupy the time with reading; to occupy the attention.
3. To hold, as an office; fill.
4. To take up and follow as a business or employment; be employed about; ply.
5. To employ; give occupation to; engage; busy: often used reflexively: as, to occupy one's self about something.
6. To use; make use of.
7. To possess; enjoy (with an obscene double meaning).
8. Synonyms 1-3. Hold, Own, etc. See possess.
9. To be in possession or occupation; hold possession; be an occupant; have possession and use.
10. To trade; traffic; carry on business.

Wiktionary

1. v. transitive To fill (time).
2. v. transitive To fill (space).
3. v. transitive To live or reside in.
4. v. transitive, military To have, or to have taken, possession or control of (a territory).
5. v. transitive To fill or hold (an official position or role).
6. v. transitive To possess or use the time or capacity of; to engage the service of.
7. v. transitive To hold the attention of.
8. v. transitive, surveying To place the theodolite or total station at (a point).

GNU Webster's 1913

1. v. To take or hold possession of; to hold or keep for use; to possess.
2. v. To hold, or fill, the dimensions of; to take up the room or space of; to cover or fill.
3. v. To possess or use the time or capacity of; to engage the service of; to employ; to busy.
4. v. obsolete To do business in; to busy one's self with.
5. v. obsolete To use; to expend; to make use of.
6. v. obsolete To have sexual intercourse with.
7. v. To hold possession; to be an occupant.
8. v. To follow business; to traffic.

WordNet 3.0

1. v. require (time or space)
2. v. consume all of one's attention or time
3. v. live (in a certain place)
4. v. occupy the whole of
5. v. be on the mind of
6. v. march aggressively into another's territory by military force for the purposes of conquest and occupation
7. v. keep busy with
8. v. assume, as of positions or roles