crumb 
/ˈkrʌm/ noun
plural crumbs /ˈkrʌm/ noun [count] 1 : a very small piece of food
▪ He swept the crumbs from under the table. ◊Crumbs are usually pieces of baked foods like bread or cake. They are sometimes used in cooking.
▪ The pie's crust is made with cookie crumbs. ▪ Coat the fish in bread crumbs before frying it. 2 informal : a very small amount of something — usually + of ▪ hoping for any crumb of affection ▪ They couldn't find a crumb of evidence against her.
▪ He swept the crumbs from under the table. ◊Crumbs are usually pieces of baked foods like bread or cake. They are sometimes used in cooking.
▪ The pie's crust is made with cookie crumbs. ▪ Coat the fish in bread crumbs before frying it.
