[? ellipt. for SOCK-LAMB.] A pet child or young animal.

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1837.  Barham, Ingol. Leg., Ser. I. Spectre of Tappington (1905), 24. Master Neddy is ‘grandpapa’s darling,’ and Mary Anne mamma’s particular ‘Sock.’

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1869.  N. & Q., 4th Ser. III. 500. You know you are a little sock!

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