ðə tˈɑːpɪŋ lˈɪft mˈoːɹ ɹˈɛɹli nˈoʊn æz ɐn ʌphˈɔːl ɪz ɐ lˈaɪn wˌɪtʃ ɐplˈaɪz ˈʌpwɚd fˈoːɹs ˌɔn ɐ bˈuːm ˌɔn ɐ sˈeɪlboʊt.
The topping lift (more rarely known as an uphaul) is a line which applies upward force on a boom on a sailboat.