The Collaborative International Dictionary
Crumb \Crumb\, v. t. [imp. & p. p. Crumbed (kr[u^]md); p. pr. & vb. n. Crumbing (kr[u^]m"[i^]ng).] To break into crumbs or small pieces with the fingers; as, to crumb bread. [Written also crum.]
Wiktionary
vb. (en-past of: crumb)
Usage examples of "crumbed".
He brought a plate of Melanzane alla finitese next, the crumbed aubergine slices bursting with hot melted cheese.
A dozen chance gestures indicated the torment of her spirit——the constant rapping of her knife against the table, her bread crumbed to pieces but uneaten, the frequent change from posture to posture of her full and flexible figure, shifting through that broad range of attitude——the very gamut of gracefulness——familiar to Italian women.
And his hands, ruined and clumsy in their burns and bandages, snagged in her hair, which crumbed and broke in bright shards.
Her tears dropping off her nose, hitting cinder with a sizzling pop as Carlos torched, his head still turned toward her, his hand reaching as it crumbed away.
I imagined he couldn't have borne to have driven a crumbed car through London.