Meaning of -S in English

-S

1.

ways, bags suffix denoting the plurals of nouns (cf. -ES(1)).

Etymology: OE -as pl. ending 2.

ties, begs suffix forming the 3rd person sing. present of verbs (cf. -ES(2)).

Etymology: OE dial., prob. f. OE 2nd person sing. present ending -es, -as 3.

besides suffix.

1. forming adverbs (afterwards; besides).

2 forming possessive pronouns (hers; ours).

Etymology: formed as -'S(1) 4.

suffix forming nicknames or pet names (Fats; ducks).

Etymology: after -S(1)

Oxford English vocab.      Оксфордский английский словарь.