WordWeb Online

1. Hinder or prevent (the efforts, plans, or desires) of
   - queer, spoil, scotch, foil, cross, frustrate, baffle, bilk

1. A crosspiece spreading the gunnels of a boat; used as a seat in a rowing boat
   - cross thwart

Derived forms: thwarts, thwarting, thwarted

See also: thwarter, thwarting

Type of: crosspiece, forbid, foreclose, forestall, preclude, prevent

Part of: dinghy, dory, rowboat [N. Amer], rowing boat [Brit]