D defs.my
Entry 1 sense Webster, 1913

Peninsulate

· Pen·in·su·late · IPA
01 v. t. To form into a peninsula.
imp. & p. p. Peninsulated; p. pr. & vb. n. Peninsulating
  1. 1.
    To form into a peninsula.
    “South River . . . peninsulates Castle Hill farm.” — W. Bentley.