'blow job' definitions:

Definition of 'blow job'

From: GCIDE

fellatio \fel*la"ti*o\ (f[e^]l*l[=a]"sh[=e]*[-o]; f[e^]l*l[=a]"t[=e]*[-o]), n. a form of sexual activity between two persons in which the penis of one is stimulated by the other's mouth, especially until orgasm is achieved. It is a form of oral sex. Compare cunnilingus. The act is also called by the slang term {blow job}. [PJC]