!dictionary fellatio   2 entries found for fellatio.   fel-la-ti-o (f-l, -sh, f-) n. Oral stimulation of the penis. [New Latin, from Latin felltus, past participle of fellre, to suck. See dh(i)- in Indo-European Roots.] So billions is spent on making it possible for people to "chat" across the world, and access dictionary's and what do you do? - look up dirty words...