Definition of "waight"

Now, when you haue two thinges Miscible, whose degrees are truely knowen: Of necessitie, either they are of one Quantitie and waight, or of diuerse.

1570, John Dee, The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara‎

By Heauen, thy madnesse shall be payed by waight, Till our Scale turnes the beame.

c. 1599–1602 (date written), William Shakespeare, “The Tragedie of Hamlet, Prince of Denmarke”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene v]

This nobler resolution in you, Lords, Heartens me to disclose some thoughts that I— The matter is of waight and dangerous.

1882–1889, Various, Old English Plays, Vol. I‎