i bumped into my brother-in-law at the grocery store, he winked at me before his wife came back with grapes, then proceeded to tell her how ugly i am
your sisters husband or husband's brother, usually older
"i bumped into my brother-in-law at the grocery store, he winked at me before his wife came back with grapes, then proceeded to tell her how ugly i am" What is the definition of "brother-in-law"?