Definition of "blow off" in English

Verb

To remove something by blowing on it.
- She blew the dust off the cookbook, revealing its full title.
To vent, usually, to reduce pressure in a container.
- The radioactivity was released when they blew off steam from the containment vessel.
To let steam escape through a passage provided for the purpose.
- The engine or steamer is blowing off.
Synonym of fart.
- I can't believe I blew off in church.
- (Can we add an example for this sense?)
To shirk or disregard (a duty or person).
- I decided to blow off the meeting and leave early.
- We've both been blowing off Peter all day: he's really boring.
To abandon (someone) as the last stage of a scam.
To reject or shut down someone's sexual advances or other offers (e.g. a job offer).
To forcibly disconnect something by use of a firearm or explosive device.
- Her leg was blown off by a landmine.
To force to leave a course.
- The storm blew the ship off course.
To perform oral sex on (someone); to give a blowjob to or suck off (someone).
To buy food or drink for (someone); to treat (someone).
- I'll blow you off to dinner.
To use up or spend (something).
- He blew off his inheritance on partying.