Sentence:  The character is also denied an affirming <WSD>liplock</WSD> with her female love interest—a former taboo that was long ago shattered by "L.A. Law", "Roseanne" and, earlier this season, "Relativity" (men kissing men, on the other hand, remains, for now, a no-no). 
Meaning of the word marked with <WSD> tags:  A kiss or the act of kissing; especially a long, passionate kiss.