Meaning

noun a long pointed rod used as a tool or weapon

noun an implement with a shaft and barbed point used for catching fish

noun a surgical knife with a pointed double-edged blade; used for punctures and small incisions

originThe surname is derived from a medieval given name Lanzo, short form of names beginning with the Germanic element *land; see land. Doublet of Lanzo.

Etymology from Wiktionary, CC BY-SA 3.0