لَحْىٌ

[not لَحًى] The jaw-bone; (Mgh, Msb;) either upper or lower: (Msb:) and, in a man, (Msb,) the part on which the beard grows. (S, Msb, K.)

And sometimes Either lateral portion of the lower jaw: see ذَقَنٌ, and الفَنِيكُ.