A sharp point; prickle; a spine

A shallow rapid in a river.

The current below a waterfall.

(obsolete) To act as referee or arbiter; to mediate.

(now rare) To argue or struggle for.

To raise objections; to argue stubbornly, especially over minor or trivial matters.

(transitive, obsolete) To separate, as combatants; hence, to quiet, to appease, as disputants.

(transitive, obsolete) To intervene in; to stop, or put an end to, by intervening.

(intransitive, obsolete) To separate combatants by intervening.

(intransitive, obsolete) To contend, contest, or altercate, especially in a pertinacious manner on insufficient grounds.

steep; high; inaccessible

(UK, dialect) high, as the water of a river; swollen; sweeping; rapid