鍵
Do you know where my key is?
Did you give Tom the key?
I lost my key yesterday.
Here's the key to your room.
The key question is not what can I gain but what do I have to lose.
When my home had an extension built I only had this room fitted with soundproofing and an internal lock.
For code-type locks that don't need a key, there are 'free dial' systems where you can set any number you like, and fixed types where the number is set in advance.
Before meeting your guests, be sure to carefully check that the toilet door locks.
Every Tuesday her fat little fingers flew like birds up and down the keys of song too.
I remember locking the door.
I would like to draw your attention to the fact that Kanjisho uses multiple sources of data provided by third parties.
The search results are provided by the wonderful Jisho API which itself uses various data sources which you can find on the jisho's website. The data concerning the kanji strokes are provided by the KanjiVG project, under the CC BY 3.0 FR license. I also use Tatoeba to provide example sentences and Kuroshiro to obtain the furiganas and romajis versions of the sentences.
If you find any vices, errors or malfunctions, please let me know so that I can correct them.