(poetic) Contraction of his.

(UK, dialect) Contraction of as (when it is (nonstandardly) used as a relative conjunction, or like a relative pronoun, meaning "that").

Contraction of us (found in the formula let’s which is used to form first-person plural imperatives).

Used to form the third-person singular indicative present tense of verbs.

Used to form regular plurals of nouns. / Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).

(informal, colloquial, sometimes humorous) Hypocoristic suffix

(on pronouns) Possessive marker, indicating that an object belongs to the word bearing the marker. / (on nouns, now nonstandard) Alternative form of -'s

Used in the formation of certain English adverbs.

Contraction of is. / Contraction of has. / (proscribed, dialectal, Southern US) Contraction of was.

(organic chemistry) secondary form