IPA: //ˈlæm.kɪl//
KK: /ˈlæmˌkɪl/
A type of plant also known as sheep laurel, which is toxic to livestock.
The farmer was concerned about the presence of lambkill in the pasture because it could harm his sheep.
The word 'lambkill' originates from Old English, where 'lamb' means a young sheep and 'kill' comes from the Old Norse 'killa', meaning to strike or kill. Therefore, 'lambkill' refers to the act of killing a lamb.
Think of a young sheep ('lamb') being struck or killed ('kill') — that's why 'lambkill' refers to the act of killing a lamb.
No commonly confused words.