Source : Webster's Revised Unabridged Dictionary (1913)

Strait-laced \Strait"-laced`\, a.
   1. Bound with stays.

            Let nature have scope to fashion the body as she
            thinks best; we have few well-shaped that are
            strait-laced.                         --Locke.

   2. Restricted; stiff; constrained. [R.] --Fuller.

   3. Rigid in opinion; strict in manners or morals.

Source : WordNet®

strait-laced
     adj : exaggeratedly proper; "my straitlaced Aunt Anna doesn't
           approve of my miniskirts" [syn: {priggish}, {prim}, {prissy},
            {prudish}, {puritanical}, {square-toed}, {straitlaced},
            {straightlaced}, {straight-laced}, {tight-laced}, {victorian}]