Sc. and north. dial. Obs. exc. Hist. Forms: 5 tronner, 5–7 tronar, 7 -our, 8 -or. [ad. med.L. tronārius, f. trona TRON.] An official who had charge of the weighing of merchandise at the tron.

1

[1365.  Stat. David II., c. 39, in Acts Parlt. Scot. (1844), I. 139/1. Et sit in quolibet loco tronarius.]

2

c. 1450.  Iter Camerar., c. 15, in Acts Parlt. Scot. (1844), I. App. iv. 698/2. Of Tronaris. At þai keip nocht þar office in assayande woll bot sum þai assay ande oþer sum þai spar for mede in scath to þe king.

3

1507.  Reg. Privy Seal Scotl., I. 219. Tronaris and uther officiaris.

4

1609.  [see COCKET sb.1 1 b, TRON v.].

5

1789.  Brand, Hist. Newcastle, II. 150, note. The Office of tronor and poisor of Newcastle upon Tyne.

6

1885.  [see TRONAGER].

7