Jewish Babylonian Aramaic

pirḳā, pirḳətā, purḳətā - joint (Jastrow 1171, 1240)

PWS
*pi/arḳ-at-, pi/aḳr-at- - neck, vertebra, occiput (SED I No. 219)
Two reconstructed stems are related metathetically; otherwise to be treated as two separate roots eventually related.