ruins; remains

change into

an old castle

a surname

search, lookup, exploration, hunt / (computer science) search

search, look up

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

(computing theory) binary search