What is the meaning of Yn?

Alternative form of in (“inn”)

Alternative form of in (“in”)

grammatical particle used in conjunction with bot (“to be”) to mark adjectival, nominal, or verbal complements

grammatical particle used to change an adjective into an adverb

Alternative form of ing (“in”)

grammatical particle used in conjunction with bod (“to be”) to mark adjectival, nominal, or verbal predicate complements

grammatical particle used to change an adjective into an adverb

Source: wiktionary.org

See also