Contraction of ので (no de).

a tracker, one who follows trails / a pursuer

to release (e.g. from custody); to acquit (e.g. of a charge)

光二, 光仁, 光司, 光次, 光治, 公二, 剛治, 好治: a male given name / 孝志, 孝次, 孝治, 宏次, 幸二, 幸司, 幸治, 康司: a male given name / 廣二, 晃二, 晃司, 晃次, 浩二, 浩司, 浩嗣, 浩次: a male given name