To get along together; sometimes, to be married.

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a. 1704.  Faith and reason, which can never be brought to set their horses together.—T. Brown, ‘Works’ (1760), iii. 198. (N.E.D.)

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[1827.  I reckon we mought paddle our canoes together pretty snipshush like.—Mass. Spy, Oct. 24: from the Augusta (Ga.) Chronicle.]

3

1830.  “Your notions and mine don’t agree; we can never hitch horses.” “Who asked you to hitch horses?”Mass. Spy, July 28: from the N.Y. Constellation. [This is given as a southernism.]

4

1837–40.  [That couple] don’t hitch their horses together well.—Haliburton, ‘The Clockmaker,’ p. 117. (N.E.D.)

5

1850.  “You want to be a carrier on the Organ?” “Yes, sir,” answered Teddy, “if we can hitch.” “Well, I guess we can hitch.”—Cornelius Mathews, ‘Moneypenny,’ p. 119 (N.Y.).

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1855.  “Betsy and me have concluded to hitch teams, and we want to do it.” “You wish to be married?” “Yes, I believe that’s what they call it.”—Weekly Oregonian, March 10.

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1857.  Mr. Moxon and I can’t hitch hosses together. Come to tie to the same post, there’ll be bitin’ and kickin’.—J. G. Holland, ‘The Bay-Path,’ p. 53.

8

1862.  

        An’ so we fin’lly made it up, concluded to hitch hosses,
An’ here I be ’n my ellermunt among creation’s bosses.
Lowell, ‘Biglow Papers,’ 2nd Series, No. 3.    

9

1872.  Some Judges had been sent here [to Utah], and they and Brother Brigham could not hitch horses.—‘Life of Bill Hickman,’ p. 81.

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