Noun
a ridge that forms the borders of the upper and lower jaws and contains the sockets of the teeth
Source: WordNetMost commonly, the tip of the tongue makes contact with the upper teeth (see dental consonant ) or the upper gum (the alveolar ridge) just behind the teeth (see alveolar consonant ). Source: Internet
Rachael-Anne Knight(2012), Phonetics- A course book, Cambridge University Press, p.27 Upper lips, teeth, alveolar ridge, hard palate, soft palate, uvula, and pharynx wall are passive articulators. Source: Internet