šabāt- - the point of the extremity of anything; the portion with which one cuts (in a sword); the two sides of the tapering head of a sandal
(BK 1 1188, Lane 1501)
May be related.
Arabic
šabāt- - scorpion (newly hatched); young scorpion
(BK 1 1188, Lane 1501, LA XIV 420)