subs. phr. (old naval).—A rope’s-end; TO HAVE SALT-EEL FOR SUPPER = to be thrashed (B. E., GROSE).

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  1695.  CONGREVE, Love for Love, iii. 7. Ben. … But an he comes near me, may-hap I may have giv’n A SALT EEL FOR’S SUPPER for all that.

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  1752.  SMOLLETT, Peregrine Pickle, xl. If so be as how you have a mind to give him a SALT-EEL FOR SUPPER.

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