καθαίρω
Etym. καθαρός
I. of the person or thing purified, "to make pure or clean, cleanse, clean, purge", καθήραντες χρόα ὕδατι Od.:— "to purge, clear" a land of monsters and robbers, Soph.
2. in religious sense, "to cleanse, purify", [δέπας] ἐκάθηρε θεείωι "purified" it by fumigating with sulphur, Il.; καθ. τινὰ φόνου "to purify" him "from" blood, Hdt.; Δῆλον κ. id=Hdt.:—Mid. "to purify oneself, get purified", id=Hdt.; οἱ φιλοσοφίαι καθηράμενοι Plat.:—so Pass., κεκαθαρμένος id=Hdt.
3. "to prune" a tree, i. e. "clear" it of superfluous wood, NTest.
4. metaph., = μαστιγόω, like our vulgar phrase ""to rub down", " Theocr.
II. of the thing removed by purification, "to purge away, wash off or away", λύματα Il.; ῥύπα Od.; φόνον Aesch.
III. c. dupl. acc., αἷμα κάθηρον Σαρπηδόνα "cleanse" Sarpedon "of" blood, "wash" the blood "off" him, Il.:—Pass., φόνον καθαρθείς Hdt.