See also fill-horse s.v. FILL sb.2 [f. THILL1 + HORSE.] The shaft-horse or wheeler in a team.

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c. 1325.  Gloss. W. de Bibbesw., in Wright, Voc., 168. En lymouns [gl.] thilles va ly limounere [gl.] the thillo-hors.

2

c. 1425.  Voc., in Wr.-Wülcker, 665/32. Hic uiredus, thylhors.

3

1483.  Funeral Edw. IV., in Lett. & Pap. Rich. III., etc. (Rolls), I. 7. Upon the fore horse, and the thil horse sat ij chariot men.

4

1543.  Will J. England (Somerset Ho.). Oon Carte, a Tyll horsse & foure Oxen.

5

1704.  W. Derham, in Phil. Trans., XXV. 1583. The Thill-Horse in Charles’s Wain, called Alioth.

6

1876.  Browning, Pacchiarotto, xxi. A Spare-Horse? Be rather a thill-horse.

7