Words

Arabic
šbm - to put a piece of wood crosswise in the mouth of a kid (Lane 1499)
Arabic
šabr-, šibr- - taille (waist) (BK 1 1183)
Arabic
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)
Cf. also šawšab- ‘louse; scorpion’ (BK 1 1226, Nöldeke 1904 123)
Arabic
šaḏaⁿ - annoyance, molestation, harm, hurt (Lane 1532)
Arabic
šaḏ̣if- - dry and hard (Lane 1553)

Also šaḏ̣f- ‘a splinter’, šiḏ̣f- ‘dry bread; a small piece of wood’.

Arabic
šidq- - the quivering flesh of the mouth, inside the two cheeks (Lane 1520)
Arabic
mišfalat- - gizzard, crop (of a bird); stomach (BK 1 1250)
Arabic
šafallāḥ- - natural female parts of body, highly developed and thick; woman whose vagina is very ample, thick; man who has big buttocks, or thick lips (BK I 1250)

Arb. š­ (< *ŝ // *ĉ) poses a problem: it can be from *š // *s influenced by ­l; alternatively *ŝx // *ŝ may be reconstructed in the protoform. 

Arabic
šafr-, šufr- - place of growth of the eyelash (BK 1 1247)
pl. ˀašfār-
Note that another meaning of the same word is ‘bord, extrémité, crête’; possibly a contamination of the two roots, with one meaning ‘edge’ and the other, ‘eyelash’.