Definitions
1.AdjectivePlaced or situated across something else; cross, oblique, transverse.
2.AdjectiveOf people: having a tendency to oppose; obstinate, perverse, stubborn.
3.AdjectiveOf situations or things: adverse, unfavourable, unlucky.
4.AdverbAcross the direction of travel or length of; athwart, crosswise, obliquely, transversely.
5.PrepositionAcross, athwart.
6.VerbTo cause to fail; to frustrate, to prevent."Our plans for a picnic were thwarted by the thunderstorm.; The police thwarted the would-be assassin."
7.VerbTo place (something) across (another thing); to position crosswise.
8.VerbTo hinder or obstruct by placing (something) in the way of; to block, to impede, to oppose.
9.VerbTo move (something) across or counter to; to cross."An arrow thwarts the air."
10.NounA seat across a boat on which a rower may sit."The fisherman sat on the aft thwart to row."
11.NounA brace, perpendicular to the keel, that helps maintain the beam (“breadth”) of a marine vessel against external water pressure and that may serve to support the rail."A well-made dugout canoe rarely needs a thwart."
12.NounAn act of thwarting; something which thwarts; a hindrance, an obstacle.