(idiomatic) to make plans

(archaic) a structure surrounded by a moat or walls: a fortress, castle

big, large, great

construction of a castle

build a castle

to stand, to place in an upright position / to release something physical but not solid or liquid / (Internet slang) to start (a thread)

oneself / first-person pronoun: I, me (often shows the speaker's lower position in a hierarchy than the addressee) / (Kansai) you

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