What is the meaning of Featherbed?

A mattress stuffed with feathers.

An area of bog where a layer of moss covers a pool of water or mud, presenting a hazard to walkers who may fall through it.

A soft, slow pitch of predictable bounce.

To treat someone with excessive indulgence; to pamper, cosset or mollycoddle.

To engage in featherbedding; to employ more workers than necessary to fulfill a labor union requirement.

Source: wiktionary.org