使 means use
send on a mission, order, messenger, envoy
A boss points and a helper runs: use someone for the job.
On'yomi
- シshi
Kun'yomi
- つか(う)tsukau
- つか(い)tsukai
- づか(い)zukai
How it's built
- 亻person
- 吏official
Common words
- 大使たいしambassador
- 行使こうしuse; exercise (of one's right, authority, power, etc.)
- 公使こうしenvoy; diplomat below the rank of ambassador (e.g. deputy chief of mission, charge d'affaires)
- 使用しようuse; application