ɪn dɹˈæɡ ɹˈeɪsɪŋ, ɐ tɹænsbɹˈeɪk ɪz ɐ mˈɛkənˌɪzəm ðæt sᵻlˈɛktɪvli plˈeɪsᵻz ðə tɹænsmˈɪʃən ɪn ɐ fˈɔːɹwɚd ænd ɹᵻvˈɜːs ɡˈɪɹ sˌaɪməltˈeɪniəsli.
In drag racing, a transbrake is a mechanism that selectively places the transmission in a forward and reverse gear simultaneously.