It depends on the context :) "Zamek" has few meanings. Everyone of them looks rather strange. Lock or zipper are rather cheap, but I don't know anyone who would like to buy a castle.
Zamknąć/zamykać means both "to close" and "to lock." You can disambiguate the two meanings by saying "zamknąć na klucz," but I've had misunderstandings happen because of the ambiguous nature of this word.
Someone else: "Zamknąłeś drzwi?" - What they mean: "Have you locked the door"? (What I think they mean: "Have you closed the door?")
Me: "Zamknąłem." - What I mean: "Yeah, I've closed it." (What someone else thinks I mean: "Yeah, I've locked it.")
The next day,
Someone else: "Czemu drzwi zostały otwarte? Przecież mówiłeś, że je zamknąłeś." ("Why was the door left unlocked? I mean, you said you locked it.")
Me: "Bo zamknąłem. Ale nie zamknąłem na klucz." ("Because I did close it. But I didn't lock it.")
It's probably a colloquial word but makes it less ambiguous.
zakluczyć is not even colloquial - must be some kind of local neologism - I haven't heard zakluczyć where I live - but I am aware that Russian has 'zakliuczit''
Same conundrum as in German, cf. "Schloss" (lock, castle), "Stollen" (traditional Christmas marzipan cake, mine ore) etc.. Often, as can be seen just in the second example, the meanings appear completely different from each other.
Ambiguities such as these make language learning fun:-)
Oh, I thought of a tamer example in Polish "ćma" (moth with the death's head on it's back, shadow > "ćiemność")
"Ćmok" which is a word similar to "ćma" can mean something like "ciemno/ciemność/noc/zmierzch". Or "po ćmoku" - "po ciemku" (in the dark). Here it probably means "after dark":
ciezkiprzekaz.ownlog.com/zycie-po-cmoku,1552912,komentarze.html I don't know if it's regional or a countryside thing. Also, in Slavic mythology "ćmok" was apparently some kind of nocturnal winged demon. Or at least Wikipedia says so: pl.wiktionary.org/wiki/%C4%87mok
You can also say "ćmi się" - which means: "it's getting darker". sjp.pwn.pl/haslo.php?id=9054
But again, it's not "literary Polish" (nowadays), I think.
More natural sounding is: "Czemu drzwi były otwarte"
To avoid any ambiguity in the above sentence one may say: Drzwi były uchylone - the doors were (slightly) open Drzwi były otwarte na oścież - the doors were open widely
...................................................................... ....... Twoja babka nie wygląda zbyt apetycznie ;)
Not very ambigious for a Pole but might be confusing for Polish learners:
OMG Paulina! Did you bring back a flood of childhood memories! Interestingly, my father used ćmok as a pejorative term as in "co za ćmok" - what a dope/fool
OMG Paulina! Did you bring back a flood of childhood memories! Interestingly, my father used ćmok as a pejorative term as in "co za ćmok" - what a dope/fool
Because that's one of the meanings :): sjp.pl/%E6mok pl.wiktionary.org/wiki/%C4%87mok Here its says: "(1.1) *gw. lwow. cham" *gwara lwowska
But I know this from the dictionary, I've never heard it used like that. Must be regional, as Poles in general usually say "ćwok":