Definition of "conveniency"

[…] with all brief and plain conveniency,Let me have judgment […]

c. 1596–1598 (date written), William Shakespeare, “The Merchant of Venice”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene i]

[…] we are rather intent upon the end of Gods glory, than our own conveniency or temporal satisfaction.

1651, Jer[emy] Taylor, chapter 1, in The Rule and Exercises of Holy Living. […], 2nd edition, London: […] Francis Ashe […], section 2

A ship is worse than a gaol. There is, in a gaol, better air, better company, better conveniency of every kind; and a ship has the additional disadvantage of being in danger.

1791, Samuel Johnson, quoted in James Boswell, The Life of Samuel Johnson, London: Charles Dilly, Volume 2, “1776,” p. 21

They refuse to legalize the marriages of their slaves, but induce them to form such temporary connexions as may suit the owner’s conveniency, just as they would pair the lower animals; and this man has the effrontery to tell us so!

1831, Mary Prince, The History of Mary Prince, a West Indian Slave‎, London: F. Westley and A.H. Davis, Supplement by the Editor, page 29