trunka

1. a bit; a shred; a grain
   U njemu nema ni trunke saosećanja. — There isn't a shred of compassion in him.
   Ostala mi je još trunka nade. — I still have a glimmer of hope left.
2. crumb; speck; particle
   Na stolu nije ostala ni trunka hleba. — Not a crumb of bread was left on the table.
   Imaš trunku na obrazu. — You've got a speck on your cheek.

Often used in negation: ni trunke + genitive.