φακός

Etymology
. From a root shared with 🇨🇬. The initial is also found in 🇨🇬, 🇨🇬 and 🇨🇬. Alternatively akin to, in which case possibly from. An origin has also been proposed, in which case the word could be a.

However note 🇨🇬, vs, paralleling 🇨🇬 already found in 🇨🇬 vs..

It is likely that the terms mentioned above are all related and derived from an ancient European and Mediterranean substrate word for "bean", which was borrowed by various groups in the area, particularly considering that the words for various beans in Indo-Aryan, a branch of Indo-European removed from this area, do not resemble the above terms.

Noun

 * 1) lentil  and its seed
 * 2) anything shaped like a lentil:
 * 3) sort of hot water bottle
 * 4) mole, birthmark, spot on the skin
 * 5) ornament on beds

Etymology
From.

Noun

 * 1)  lens
 * 2) torch, flashlight