Webster's Revised Unabridged Dictionary · 1913

Reak

Reak (rēk) , noun

[r115. Compare Wrack seaweed.]

A rush. [Obsolete]
Feeds on reaks and reeds. — Drant

Reak , noun

[Compare Icelandic hrekkr, or English wreak vengeance.]

A prank. [Obsolete]
They play such reaks. — Beau. & Fl