(Noun) A noise a xeno/alien emits when expressing joy, pleasure, excitement, satisfaction, or other positive emotions.
(Verb) A declaration of sexual interest towards xenos/aliens. Can be compared to "yiff" towards furries.
(Noun) "The alien let out a trill when found a lone cow in the pasture to abduct."
(Verb) "The alien was not prepared for the farmer's trill intentions, who had just been abducted while wearing a cow costume."
4👍 3👎