H2992 יָבַם (yaw-bam')

KJV renderings: perform the duty of a husband's brother, marry.
Strong's definition: to marry a (deceased) brother's widow
Derivation: a primitive root of doubtful meaning; used only as a denominative from H2993 (יָבָם);

From James Strong's public-domain dictionaries (H), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.