Rock-a-bye Baby 

Is a nursery rhyme and lullaby.

The most common version used today is:

Rock-a-bye baby, in the treetop,

When the wind blows, the cradle will rock,

When the bough breaks, the cradle will fall,

And down will come baby, cradle and all.

Rock-a-bye Baby by Gianluca Sanna (JohnDorian) June 17, 2009

rock-a-bye

It's an interjection, always used to settle a baby or child down to sleep.

"rock-a-bye, Baby," sang Alfred in strident tones and he swung the child high in his arms.

rock-a-bye by Rockbabe! January 4, 2018

Rock-a-bye baby College

A college or university that treats kids with learning differences softly as inferiors with no educational merit

Massachusetts has Harvard and MIT, but it also has Curry and Landmark: the two biggest rock-a-bye baby colleges in America

Rock-a-bye baby College by o23gfh January 28, 2026

Rockabye 

1. When someone hits the nail on the head with a comment or comeback, the appropriate response by any participating spectator should be "rockabye".

2. When someone makes a suggestion that is simply outstanding, the appropriate response is "rockabye". Sort of similar to "amen" if you will.

Person 1: "Let's get wasted tonight!"
Person 2: "Rockabye!"

Rockabye by Libby G. May 28, 2006