- 燕尾服 yànwěifú swallow-tailed coata formal Western-style black evening dress coat for men, featuring a short front and a long back split into two tails resembling a swallow's tail
- 斑背燕尾 bānbèiyànwěi spotted forktail(bird species of China) spotted forktail (Enicurus maculatus)
- 灰背燕尾 huībèiyànwěi slaty-backed forktail(bird species of China) slaty-backed forktail; Enicurus schistaceus
- 燕尾旗 yànwěiqí swallowtail flaga flag with a V-shaped cut in the end, resembling the tail of a swallow; burgee
- 燕尾草 yànwěicǎo arrowheadarrowhead, an aquatic plant of the genus Sagittaria with arrow-shaped leaves
- 燕尾蝶 yànwěidié swallowtail butterflyswallowtail butterfly; any butterfly of the family Papilionidae
- 白冠燕尾 báiguānyànwěi white-crowned forktail(bird species of China) white-crowned forktail; Enicurus leschenaulti
- 小燕尾 xiǎoyànwěi little forktail(bird species of China) little forktail (Enicurus scouleri)
- 黑背燕尾 hēibèiyànwěi black-backed forktail(bird species of China) black-backed forktail (Enicurus immaculatus)