All 3 Uses

feud
in
Arrowsmith
(Auto-generated)

Clif asserted, and a feud was on.†
Chpt 3 *

feud = a bitter, long-standing fight
Then, to destroy him complete, the House of Assembly, which is the St. Hubert legislature, was riven by the feud of Kellett the Red Leg and George William Vertigan.†
Chpt 31
Thanks more to her than to his own articulateness, he made living the Institute, the members, their feuds, and the drama of coursing on the trail of a discovery.†
Chpt 37

feuds = bitter, long-standing fights

Definitions:

(1) (feud)
bitter hostile argument between two parties -- typically long-standing between families or tribes with occasional incidents of violence

Sometimes the term blood feud is used to reference a feud between families.
(2) (meaning too rare to warrant focus)