Meaning of ES in English

Function: verb suffix

Etymology: Middle English ― more at 3 -S

― used to form the third person singular present of most verbs that end in s <bless es >, z <fizz es >, sh <hush es >, ch <catch es >, or a final y that changes to i <defi es > ― compare 3 -S

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.