The Collaborative International Dictionary
In waiting
Waiting \Wait"ing\, a. & n. from Wait, v.
In waiting, in attendance; as, lords in waiting. [Eng.]
Waiting gentlewoman, a woman who waits upon a person of rank.
Waiting maid, Waiting woman, a maid or woman who waits upon another as a personal servant.
Usage examples of "in waiting".
She had lately spent a large part of her existence in waiting for Larralde, who, indeed, was busy enough at this time, and rarely stirred abroad while the sun was up.