Definition of "lop"

Some, for hard masters, broken under arms,In battle lopt away, with half their limbs,Beg bitter bread thro’ realms their valour sav’d,

1742, Edward Young, The Complaint: or Night-Thoughts on Life, Death & Immortality, Night I

Why, we take, From every tree, lop, bark, and part o'the timber

1613 (date written), William Shakespeare, [John Fletcher], “The Famous History of the Life of King Henry the Eight”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act I, scene ii]

I ſhall not trouble you about the raiſing of them of Truncheons or Lops, because I could never find them to take; only ſometimes ſome of the ſmallest Suckers, when the Sap is newly ſtirring in them, if they are ſlipt off from the Tree, will grow

1707, J[ohn] Mortimer, The Whole Art of Husbandry; or, The Way of Managing and Improving of Land. […], 2nd edition, London: […] J[ohn] H[umphreys] for H[enry] Mortlock […], and J[onathan] Robinson […], published 1708

Lice, That's nick name to the stuff called Lops

1651, John Cleveland, “The Hue and Cry after Sir John Presbiter”, in Poems

"He's a lop; it mentions here about his getting up to the stand with his crippled leg but it doesn't say which one."

1935, Rex Stout, The League of Frightened Men, page 5