cover over / hide / narrow-necked

to cover / to cover up, to conceal, to hide / to permeate, to spread throughout / to include everything

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

(Internet slang, dated) Windows (an operating system)

window / (regional, dialect, Etchū region) a deep gap in a mountain ridge (so called for the way the wind blows through, like a window)

window

conceal, cover up

everything