Definitions for "blowjob"
Keywords:  kahlua, cream, think, sweet, drink
a long tube filled with whipped cream and some sweet drink -- Kahlua, we think
Keywords:  dick, suck, guy, literally, anything
To give someone a blowjob (also "blow job") means to suck a dick. It's also called "to give head".
To suck or lick a guy's cock usually until he has an orgasm. You don't literally blow on anything.