(1):

(n.) A seat in an open boat reaching from one side to the other, or athwart the boat.

(2):

(a.) Thwartly; obliquely; transversely; athwart.

(3):

(a.) Situated or placed across something else; transverse; oblique.

(4):

(a.) Fig.: Perverse; crossgrained.

(5):

(prep.) Across; athwart.

(6):

(v. t.) To move across or counter to; to cross; as, an arrow thwarts the air.

(7):

(v. t.) To cross, as a purpose; to oppose; to run counter to; to contravene; hence, to frustrate or defeat.

(8):

(v. i.) To move or go in an oblique or crosswise manner.

(9):

(v. i.) Hence, to be in opposition; to clash.