Quarrel n. : An arrow for a crossbow; -- so named because it commonly had a square head.

Quarrel n. : Any small square or quadrangular member

Quarrel n. : A square of glass, esp. when set diagonally.

Quarrel n. : A small opening in window tracery, of which the cusps, etc., make the form nearly square.

Quarrel n. : A square or lozenge-shaped paving tile.

Quarrel n. : A glazier's diamond.

Quarrel n. : A four-sided cutting tool or chisel having a diamond-shaped end.

Quarrel n. : A breach of concord, amity, or obligation; a falling out; a difference; a disagreement; an antagonism in opinion, feeling, or conduct; esp., an angry dispute, contest, or strife; a brawl; an altercation; as, he had a quarrel with his father about expenses.

Quarrel n. : Ground of objection, dislike, difference, or hostility; cause of dispute or contest; occasion of altercation.

Quarrel n. : Earnest desire or longing.

Quarrel v. i. : To violate concord or agreement; to have a difference; to fall out; to be or become antagonistic.

Quarrel v. i. : To dispute angrily, or violently; to wrangle; to scold; to altercate; to contend; to fight.

Quarrel v. i. : To find fault; to cavil; as, to quarrel with one's lot.

Quarrel v. t. : To quarrel with.

Quarrel v. t. : To compel by a quarrel; as, to quarrel a man out of his estate or rights.

Quarrel n. : One who quarrels or wrangles; one who is quarrelsome.

Example:
What causes the Quarrel between Agamemnon and Achilles?

Taxonomy
quarrel, dispute, intr, altercation, quar, bolt, Synonyms, Antonyms, peace, Streit, Houghton Mifflin Company, Dictionary, findings, the committee, rels, Middle English, Thesaurus, disagreement.

Defination from the web:
quarrel n. An angry dispute; an altercation. A cause of a dispute or an argument: We have no quarrel with the findings of the committee ... The name "quarrel" is derived from the French carré, "square", referring to the fact that they typically have square heads. ...