Middle English word louk comes from Proto-Germanic *lōkōną (To look, see.), Proto-Germanic *lukōn

Detailed word origin of louk

Dictionary entry	Language	Definition
*lōkōną	Proto-Germanic (gem-pro)	To look, see.
*lukōn	Proto-Germanic (gem-pro)
lōcian	Old English (ang)
loca	Old English (ang)	Locked enclosure.
loca	Old English (ang)	-ever. Look, see here.
loke	Middle English (enm)

Words with the same origin as louk