Answer: trapezia

AnswerCrossword Clue
TRAPEZIACertain four-sided figures
trapeziabone in the wrist that articulates with the metacarpal bone of the thumb
trapeziaTRAPEZIUM, any quadrilateral that is not a parallelogram
trapeziaany rectilinear quadrilateral plane figure not a parallelogram; such a figure of which no two sides are parallel; such a figure having two parallel and two nonparallel sides