1. Godan verb with 'ru' ending, Intransitive verb

   to take (a resource, e.g. time or money)

   Usually written using kana alonesee 時間がかかる

   あれだけのコインを収集するのにどれだけの年月がかかりましたか。

2. to hang

   Usually written using kana alone

3. to come into view; to arrive

   Usually written using kana alonesee お目にかかる

4. to come under (a contract, a tax)

   Usually written using kana alone

5. to start (engines, motors)

   Usually written using kana alone

6. to attend; to deal with; to handle

   Usually written using kana alone

7. Godan verb with 'ru' ending, Auxiliary verb

   to have started to; to be on the verge of

   Usually written using kana alone

8. Godan verb with 'ru' ending, Intransitive verb

   to overlap (e.g. information in a manual); to cover

   Usually written using kana alone

9. Godan verb with 'ru' ending, Auxiliary verb

   to (come) at

   Usually written using kana alone

10. Godan verb with 'ru' ending, Intransitive verb

    to be fastened

    Usually written using kana alonesee 鍵がかかる

11. to be covered (e.g. with dust, a table-cloth, etc.)

    Usually written using kana alone

12. to be caught in

    Usually written using kana alonesee 罠にかかる

13. to get a call

    Usually written using kana alonesee 電話が掛かる

14. to depend on

    Usually written using kana alone

15. to begin (a task); to set about (doing); to get down to

    Usually written using kana aloneusu. ～にかかる

Also written 掛る【かかる】kakaru、懸かる【かかる】kakaru、懸る【かかる】kakaru