Meaning

• A person who is held in servitude as the property of another person, and whose labor (and often also whose body and life) is subject to the owner's volition and control.

• A drudge; one who labors or is obliged (e.g. by prior contract) to labor like a slave with limited rights, e.g. an indentured servant.

• An abject person.

• One who has no power of resistance (to something), one who surrenders to or is under the domination (of something).

  "a slave to passion, to strong drink, or to ambition"

• (BDSM) A submissive partner in a BDSM relationship who (consensually) submits to (sexually and/or personally) serving one or more masters or mistresses.

• A sex slave, a person who is forced against their will to perform, for another person or group, sexual acts on a regular or continuing basis.

• A device (such as a secondary flash or hard drive) that is subject to the control of another (a master).

Meaning

• To work as a slaver, to enslave people.

• To work hard.

  "I was slaving all day over a hot stove."

• To place a device under the control of another.

  "to slave a hard disk"