Crumb
Vine's Expository Dictionary of NT Words [1]
"a small morsel," a diminutive of psix, "a bit, or crumb;" of bread or meat, it is used in Matthew 15:27; Mark 7:28; some mss. have it in Luke 16:21 .
Webster's Dictionary [2]
(1): (n.) A small fragment or piece; especially, a small piece of bread or other food, broken or cut off.
(2): (n.) Fig.: A little; a bit; as, a crumb of comfort.
(3): (n.) The soft part of bread.
(4): (v. t.) To break into crumbs or small pieces with the fingers; as, to crumb bread.
International Standard Bible Encyclopedia [3]
krum ( ψιχίον , psichı́on , "a little bit"): Occurs only in the New Testament, of remnants of food, scraps. Lazarus desired "to be fed with the crumbs that fell from the rich man's table" ( Luke 16:21 ). "Even the (little) dogs eat of the crumbs" ( Matthew 15:27; Mark 7:28 ), "possibly the fragments of bread on which the guests wiped their hands (after thrusting them into the common dish), and flung to the dogs" (Farrar, Life of Christ , I, 476).