hushaby exclamation 1noun 1verb 1forms 3 exclamation1 •(no longer used) hush and be still; a lull to sleepHush-a-by, baby, upon the tree-top; / When the wind blows the cradle will rock; / When the bough breaks the cradle will fall; / Down will come cradle and baby and all. — 1805 noun1 •A lullaby used to soothe babies to sleep. verb1 •(no longer used) To lull to sleep by saying "hushaby". formshushabied · hushabying · hushabies