Artificial intelligent assistant

lin-pin

ˈlin-pin Obs. exc. dial.
  Also 4–6 lynpin, 5 -pyne, linepin, 7 linnpin.
  [f. lin (see linch n.1) + pin.]
  = linch-pin.

c 1330 Durham Acc. Rolls (Surtees) 518 In..duobus Lyn⁓pinnes. c 1425 Voc. in Wr.-Wülcker 665/29 Hoc hunullum, lynpyne. 1523 Fitzherb. Husb. §5 With..ii. lyn pinnes of yren in the axiltre-endes. 1598 Barret Theor. Warres v. iii. 133 Rammers, linepinnes,..and all such other implements. 1659 C. Hoole tr. Comenius' Orbis Sensualium (1672) 173 The Axle-trees..the Lin-pins, and Axletree-staves. 1688 R. Holme Armoury iii. 339/2 Linn Pin.

Oxford English Dictionary

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