Imbanking

from The Collaborative International Dictionary of English v.0.48

Imbank \Im*bank"\, v. t. [imp. & p. p. {Imbanked}; p. pr. & vb.
   n. {Imbanking}.] [Pref. im- in + bank. Cf. {Embank}.]
   To inclose or defend with a bank or banks. See {Embank}.
   [1913 Webster]