herb knife

plural herb knives

1. A knife for cutting fresh herbs.

   She took out her herb knife. She dug; she cut. Mama had told her this sort of bush was no good but to look at.

   1993, Karen Harper, Circle of Gold, Signet Book, →ISBN

   1 more example

   ... Elizabeth, resolutely ignoring all the waiting chores, picked up her herb knife and went outside to her little garden.

   1975, Anya Seton, The Winthrop woman, →ISBN

2. A mezzaluna used to chop culinary herbs.