Definitions of engage:

• verb:   get caught

  Example: "Make sure the gear is engaged"

• verb:   as of aid, help, services, or support
• verb:   as of wars, battles, or campaigns
• verb:   ask to represent; of legal counsel
• verb:   keep engaged

  Example: "Engaged the gears"

• verb:   carry out or participate in an activity; be involved in

  Example: "They engaged in a discussion"

• verb:   engage or hire for work
• verb:   give to in marriage
• verb:   engage or engross wholly
• verb:   engage for service under a term of contract