Ch Definition

abbreviation
Chain.
Webster's New World
Champion.
Webster's New World
Check (chess)
American Heritage
Chapter.
Webster's New World
Chronicles.
Webster's New World
pronoun

(obsolete, dialectal) Alternative form of I.

Wiktionary

(obsolete, attached to following verb) I; clitic form of ich.

Wiktionary
symbol

(organic chemistry) The molecular formula for methane.

Wiktionary