(archaic) the portion of a feather where the quill attaches to the skin / a feather, down, plume / a wing (as of a bird, bat, insect, or airplane) / a fletching on an arrow / a shuttlecock

evildoing (evil or wicked act)

(slang, pun) Used as a replacement for the term 生活(せいかつ) (seikatsu, “life”) in sexual contexts.

to kill