ringboltn.

1599 T. Nashe Lenten Stuffe 59 A Towne twoo mile beyond this Norwich,..hauing monuments of a castle in it enuironing fifty acres of ground, and ringbolts in the walles whereto ships were fastned.

1626 J. Smith Accidence Young Sea-men 13 The canhookes, slings and parbunkels, ports and ringbolts and hooks.

1644 H. Mainwaring Sea-mans Dict. at Bolt Ring-bolts..are of infinite necessary use, both for the bringing to of the planckes and wales to the ship, as also the chiefe things whereunto we fasten the tackles and breetchings of the great Ordnance.

1769 W. Falconer Universal Dict. Marine (at cited word) The ring-bolts are for several uses, but particularly to hook the tackles, by which the cannon of a ship are managed and secured.

1797 S. James Narr. Voy. 35 He found two English gentlemen bound hand and foot to the ringbolts in the 'tween decks.

1834 F. Marryat Peter Simple II. xvi. 278 Our guns..bounced up to the beams overhead, tearing away their ringbolts.

1840 Crockett Almanac 1841 19 A ring bolt in the barn floor.

1888 W. B. Churchward ‘Blackbirding’ in S. Pacific 141 I had just time to throw myself flat on the deck, and hold on to a ringbolt.

1917 J. Conrad Shadow-line v. 169 I would find him sitting..with an idiotic gaze fastened on some object near by—a rope, a cleat, a belaying pin, a ringbolt.

1968 E. R. Buckler Ox Bells & Fireflies xv. 215 He just grabbed the sonofabitch by the scruff o' the neck and lifted him about two feet offa the floor—and, by God, by the time he was through with him, he brought him to the ringbolt and don't you think he didn't.

1974 R. Adams Shardik xxvi. 210 The tie-bars..were secured by chains to ring-bolts set..in the walls and floor.

2003 N. Rush Mortals xxx. 436 He had managed to get a look..by climbing up the cross braces on the inside of the doors while hanging on to a ringbolt set into the lintel.