From French surcroît increase, addition.


surcrew (plural not attested)

  1. (obsolete) increase; addition; surplus.
    • a. 1639, Henry Wotton, letter to Izaak Walton
      It had once left me, as I thought, but it was only to fetch more company, returning with a surcrew of those splenetick Vapours that are called Hypochondriacal []

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for surcrew in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913)