1) An iron hoop, said to fit round the nave of a wheel.
First noted in the OED in 1688, it was not uncommon in Yorkshire records: 1560 iij frettes of Iron, Eccup
1613 a harrow, freat & a tugwythye of iron, Cottingley
1619 4 old stroakers [sic], 3 fretts, one runner, Bingley
1639 Fower wheele freats, Swinsty.