Meaning of Lael. Hebrew name. In Hebrew, the name Lael means-Belonging to God. Traditional male Biblical name.. Other origins for the name Lael include-Hebrew, Israeli.The name Lael is most often used as a girl name or female name.Hebrew Name Meaning-Belonging to God.ebrew name. In Hebrew, the name Lael means-Belonging to God. Traditional male Biblical name.. Other origins for the name Lael include-Hebrew, Israeli.The name Lael is most often used as a girl name or female name.