1) To take care of; to look after, especially of sick people and animals.
1598 Willm. Blande and one Billington were herdemen in somer tymes for the Abbott ... and kepte and loked to theyr horses and cattell ther, Malham Moor
1638 to Dorithe Shawe for lowkin to me in my siknes, xs, Thorpe Willoughby
1675 hee bought those lambs of one which was looking to a flocke of sheepe, Bradley, Huddersfield.