apply

verb

1. put into service; make work or employ for a particular purpose or for its inherent or natural purpose"use your head!"
2. be pertinent or relevant or applicable"The same laws apply to you!"
3. ask (for something)"He applied for a leave of absence"
4. coat, cover or smear a surface with"She applied paint to the back of the house"
5. be applicable to; as to an analysis"This theory lends itself well to our new data"
6. give or convey physically"She gave him First Aid"
7. avail oneself to"apply a principle"
8. ensure observance of laws and rules"Apply the rules to everyone"
9. refer (a word or name) to a person or thing"He applied this racial slur to me!"
10. apply oneself to"Please apply yourself to your homework"