*gem-: some additional data [was Re: [tied] Basileus]

It is in P. Ya. Chernyh: Istoriko-etimologicheskiy slovar'
sovremennogo russkogo yazyka, 2nd ed., Moscow 1994.

Pokorny and Falk & Torp are referred to.

Russian z^at', z^mu is derived from IE *gem-, pointing at these words
in other languages:
Greek gemein `to be (over)loaded', gomos `ship cargo';
Middle Irish gemel `fetters';
Norw. (dial.) kamsa and Old Scand. kumla - `press, compress, knead,
mould'.

P.S.