Biol. a short, sharp point, tip, or process projecting abruptly from certain parts and organs, as at the end of a leaf
Origin of mucroModern Latin ; from Classical Latin sharp point ; from Indo-European base an unverified form meuk-, to scratch from source Classical Greek amychē, a scratch
A sharp, pointed part or organ, especially a sharp terminal point, as of a leaf or shell.
Origin of mucroLatin mūcrō, mūcrōn-, sharp point.