The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
Appendix I
Indo-European Roots
ENTRY:
s-
DEFINITION:
Pig. Contracted from *su-; probably a derivative of seu-1.1. Suffixed form *su-no-.a.swine, from Old English swn, swine; b.keelson, from Old Norse svn, swine. Both a and b from Germanic *swnam.2. Suffixed form *su-k-.a. (i)hog, from Old English hogg, hog, from British Celtic *hukk-, from Celtic expressive form *sukko-, swine, snout of a swine; (ii)socket, from Anglo-Norman soc, plowshare, perhaps from Celtic *sukko-;b.sow2, from Old English sugu, sow, from Germanic *sug.3. Basic form *s-.sow2, from Old English s, from Germanic *s-.4.soil2, from Latin ss, pig. 5.Hyades, hyena; hyoscine, from Greek hs, swine. (Pokorny s-s 1038.)
-
-; probably a derivative of seu
no-. a. swine, from Old English sw
-. a. (i) hog, from Old English hogg, hog, from British Celtic *hukk-, from Celtic expressive form *sukko-, swine, snout of a swine; (ii) socket, from Anglo-Norman soc, plowshare, perhaps from Celtic *sukko-; b. sow2, from Old English sugu, sow, from Germanic *sug
. 3. Basic form *s
-s 1038.) 
