How do you pronounce 磨牙?

Q: How do you pronounce 磨牙? A: mo4 ngaa4, e.g.

磨牙 (mo4 ngaa4) — meaning, pronunciation, examples

磨牙 (mo4 ngaa4, mó yá) — to grind one's teeth (during sleep); pointless arguing; (coll.) molar

磨嘴皮 (mo4 zeoi2 pei4) — To persuade
磨心 (mo4 sam1) — among midst of conflicting opinions
磨碌 (mo4 luk1) — moron; stupid; retarded (spoken)
磨爛蓆 (mo4 laan6 zek6) — to linger around somewhere for a long time; to have prolonged sex [colloquial]
磨鏡 (mo4 geng3) — literally: mirror grinding; lesbian sex [colloquial]
磨 (mo4) — to rub; to grind; to polish; to sharpen; to wear down; to die out; to waste tim…