Roust1, n.
n. [Cf. Icel. röst, an estuary.] A strong tide or current, especially in a narrow channel. [Written also rost and roost.] Jamieson. W. Scott.
2 entries under this word
Roust
Roust2, v. t.
v. t. To rouse; to disturb; to vex; as, to roust one out. [Prov. Eng.]