self-heal
‘several plants held to have remarkable healing properties’
Lexical development traced from the Tamil root:
E. sulfelæ, sylf-hele, celfhele, selfe-heale < O.E. sylfhele < self + heal < O.E. hælan ‘cure; save; make whole, sound and well’ < Proto-G. halijan < heel < kailo- < Tamil el (ellām)