كل or كلي in Arabic means the act of taking something into the mouth and swallowing it. From the beginning to the end. It includes something to chew يمضغ and to swollow يبلع it.
It refers only to hard food, not liquid. we have to eat for hard food) يأكل ، and to drink يشرب for liquid (water, soup::). But there is another verb, whicht is used for both, that is يطعم ، derived from طعام which means food in Englsh.
I hope I could help: