Green’s Dictionary of Slang

1. feeling sick after a drinking bout.

1639		J. Taylor Crabtree Lectures 133: Every day foxed & brought home by a watchman; and next morning you are then a little crop-sick .
c.1673		Dorset ‘The Debauchee’ Works of Rochester, Roscommon, Dorset (1720) n.p.: Then Crop-sick all morning, I rail at my Men, / And in Bed I lie yawning ’till Eleven again.
1696		J. Dunton Night-Walker Oct. 7: When we met next morning , then it was our greatest delight to make railleries upon such of our Companions as were Cropsick with the debauch over night.
1705–07		N. Ward Hudibras Redivivus I:9 9: I then stept out, like Crop-sick Sinner, / To air my Lungs against my Dinner.
1742		N. Hooke Sarah-Ad 20: Now the most plaguy Cropsick was, / And had cascaded I suppose; / For at her Bed’s-Head slily stood / A half-drank Pitcher of Home-brew’d.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1797		Sporting Mag. Jan. IX 224/2: Can you, ye fair, with these, your time beguile, / And on such crop-sick coxcombs beam a smile?
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. drunk.

1770

Gent.’s Mag. Dec. 559/2: To express the condition of an Honest Fellow [...] under the Effects of good Fellowship, it is said that he is [...] Cropsick.