Similar words
tranca
fechadura and tranca are close synonyms for "lock"; tranca also separately means "bar," a bolt across a door.
Similar in other languages
Spanish
esclusa
esclusa is the Spanish word for the same thing — both mean "lock."
French
serrure
serrure is the French word for the same thing — both mean "lock."
Practice
1 What does fechadura mean?
lock
2 Fill the gap: Troquei a ___.
Full sentence: Troquei a fechadura. (I changed the lock.)
3 Which fingerprint chart matches fechadura?
fechadura: neutral register, common frequency, general domain, neutral connotation.