Parallelogram

[Sarah]

A right-lined quadrilateral figure, whose opposite sides areparallel, and consequently equal; -- sometimes restricted in popularusage to a rectangle, or quadrilateral figure which is longer than itis broad, and with right angles. Parallelogram of velocities, forces,accelerations, momenta, etc. (Mech.), a parallelogram the diagonal ofwhich represents the resultant of two velocities, forces,accelerations, momenta, etc., both in quantity and direction, whenthe velocities, forces, accelerations, momenta, etc., are representedin quantity and direction by the two adjacent sides of theparallelogram.

[Sarah]

In Euclidean geometry, a parallelogram is a simple (non self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure. The congruence of opposite sides and opposite angles is a direct consequence of the Euclidean Parallel Postulate and neither condition can be proven without appealing to the Euclidean Parallel Postulate or one of its equivalent formulations. The three-dimensional counterpart of a parallelogram is a parallelepiped.
The etymology (in Greek παραλληλ-όγραμμον, a shape of

[Sarah]

any quadrilateral, such as a [square], [rectangle] or [rhombus], with opposing [parallel] sides being of [equal] [length]

[Sarah]

someone who cant walk

[Sarah]

A group of four or more paraplegics.
They tend to roam around eateries and fat people, taunting them by going faster than them even without usable legs.

[Sarah]

A word that only appears int he lyrics to one song- [Motörhead] by [hawkwind], and then again by [Motörhead].

[Sarah]

the physical posture of someone that's crippled, usually marked by their leaning slouch to one side, as noted by a vertical parallelogram.

[Tanya Shivari]

Parallelogram in Hurling. The area directly in front of goal. Attacking players are not allowed to enter this zone without the ball, and the goalkeeper cannot be charged within this area, unless he has the ball or is obstructing an opponent.

[Britney]

a flat shape that has four sides. The two sets of opposite sides are parallel and of equal length to each other.

[Raeanne Dimick]

A four-sided plane rectilinear figure with opposite sides parallel.