Definition of "cloistral"

[...] it is in that Kind [of Words], as best accords / With rural Passions, which use not to reach / Beyond the Groves, and Woods, where they were bred / And best become a Cloistral Exercise, / Where Men shut out retir’d, and sequestred / From publick Fashion, seem to sympathize / With innocent and plain Simplicity:

1606, Samuel Daniel, The Queen’s Arcadia, in The Poetical Works of Mr. Samuel Daniel, London: R. Gosling, 1717, The Epistle, pp. 151-152

As to the marriage of the friars in this cloystral house, their founder, Ivon, in my opinion, was quite right in this notion.

1766, Thomas Amory, The Life of John Buncle: Esq., London: J. Johnson and B. Davenport, Volume 2, Section 3, p. 56

Coming straight from the convent, she had gone in behind the high walls of the manor-house that was almost more cloistral than any convent could have been.

1915, Ford Madox Hueffer [i.e., Ford Madox Ford], chapter II, in The Good Soldier: A Tale of Passion, London: John Lane, The Bodley Head; New York, N.Y.: John Lane Company; republished Harmondsworth, Middlesex [London]: Penguin Books, 1972 (1982 printing), part III, page 126

[T]he three men followed, rushing into the hall, pausing, bringing with them into its stale and cloistral dimness something of the savage summer sunlight which they had just left.

1932, William Faulkner, chapter 19, in Light in August, [New York, N.Y.]: Harrison Smith & Robert Haas; republished London: Chatto & Windus, 1933, page 438

Speak not! he is consecrated— / Breathe no breath across his eyes: / Lifted up and separated / On the hand of God he lies, / In a sweetness beyond touching,—held in cloistral sanctities.

1844, Elizabeth Barrett Browning, “A Child Asleep”, in Poems. […], volume II, London: Edward Moxon, […], page 126

[...] however cloistral our elementary schools may be, sheltering the eternal flame of the high ideal of human existence, Jimmy Shepherd, aged twelve, and Nancy Shepherd, aged thirteen, know very well that the eternal flame of the high ideal is all my-eye.

1936, D. H. Lawrence, “Education of the People”, in Edward D. McDonald, editor, Phoenix: The Posthumous Papers of D. H. Lawrence, London: Heinemann, page 588

[...] cloistral avenues,Where silence dwells if music be not there:

1850, William Wordsworth, The Prelude‎, London: Edward Moxon, Book 6, p. 163

Then, responsive to the bird’s insistence,From the margin of some cloistral shoreCame a murmur up the hollow distance,“On the morrow will I ope the door!”

1904, Clinton Scollard, “The Summoner”, in The Lyric Bough‎, New York: James Pott, page 26