Wiktionary
n. (context anatomy English) The combined vagina and cervix, when the cervix dilates during birth to form a continuous tube with the vagina.
WordNet
n. a passage in the uterus and vagina through which a fetus passes during vaginal birth
Usage examples of "birth canal".
And the sweetness of the air - it had been like slipping from the birth canal, taking air into the lungs for the very first time.
Within seconds the tiny quadroids that had been inside Eponine for the last contraction would race to the patch, and the new ones would then scramble up the birth canal.
The contractions became even more painful when the babys head wedged its way into the birth canal.
Somehow he managed, on his third attempt, both to force her backward in the birth canal and to turn her over so she could be born.
In that one, a woman has to wear a big A for adultery on her bosom because she let a man not her husband ejaculate in her birth canal.
Wyler resorted to chloroform, and twenty minutes later withdrew a big, strong baby girl from the birth canal.
I still exercise regularly-because my birth canal has been stretched again and again and again by babies' skulls and if I didn't exercise those muscles I would be, in Father's salty language, 'loose as a goose.
I stil exercise regularly-because my birth canal has been stretcher again and again and again by babies' skulls and if I didn' exercise those muscles I would be, in Father's salty language 'loose as a goose.
She explained to both me and Jack that this first stage of labor involved the dilation of the cervix, the birth canal.
To preserve the required strength, the birth canal must be comparatively narrow.