kōsen
1. gun rifling
Noun
#445919
1. gun rifling
1. Cavity line; Tunnel line
1. Wasn't a cavity line.; Wasn't a vocal cord.
1. It is not a cavity.; It is not a hollow.
1. Probably a cavity.; Probably a hollow line.
1. If/when cavity line; If/when vocal tract
1. Was a cavity line.; Was a vocal cord.
1. Cavity line; Polite speech
1. Is not a cavity line.; Is not a vocal cord.
1. Not a cavity line.; Not a vocal cord.