English dictionary
straightedge
/'str/eI/t,/E//dZ/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
hand tool consisting of a flat rigid rectangular bar (metal or wood) that can be used to draw straight lines (or test their straightness)
Source: WordNet 3.0
-
A board, or piece of wood or metal, having one edge perfectly straight, -- used to ascertain whether a line is straight or a surface even, and for drawing straight lines.
Source: webster1913