Cephalosporin

Etymology
Cephalosporins:

A class of antibiotics named for the fungus (Cephalosporium acreminium) from which they were derived.

cephalo: from Greek Κεφάλι (kefali), meaning "head", due to the "head"-like cluster of spores at the end of the stalks of the Cephalosporium fungi

sporins: from Greek σπορά (spora), meaning "seed", due to the head-like "spores" used in fungal reproduction

For reference, this genus is now called Acremonium (https://mycology.adelaide.edu.au/descriptions/hyphomycetes/acremonium/)

Explanation/Mnemonic
Cephalosporins are a group of antibiotics which are of the class of beta-lactam antibiotics, containing a beta-lactam ring. The first cephalosporin was isolated from a fungus, Cephalosporium, which releases "spores" (sporin), in order to sow its genes around. So "sporin" reminds you of its fungal origin.

Memory trick: Its unclear where the "cephalo" stem comes from, however it reminds me of the brain (see also: cephalization, encephalopathy, etc). Of the cephalosporins, only 3rd generation drugs cross the blood-brain-barrier (BBB) in high doses, so when we see "cephalo" we can think that it gets into the "brain", but only 3rd generation (there are 3 B's in BBB = blood brain barrier).