\Pax"wax`\, n. [For faxvax, fr. AS. fea? hair (akin to
OHG. fahs) + weaxan to grow. See {Wax} to grow, and cf.
{Faxed}, {Pectinate}.] (Anat.)
The strong ligament of the back of the neck in quadrupeds. It
connects the back of the skull with dorsal spines of the
cervical vertebr[ae], and helps to support the head. Called
also {paxywaxy} and {packwax}.