What is the meaning of Hyd?

simple past of hyde

Initialism of how('re) you doing. (how are you doing?)

Alternative form of hyde (skin)

Alternative form of hide (concealment, hiding)

Alternative form of hyed: simple past/past participle of hyen (to go quickly)

Alternative form of hidde: simple past/past participle of hiden (to hide)

skin, hide

poultry

length

until

until

Source: wiktionary.org