明白[meihaku] obvious
明白[akarasama] plain
明かん[akan] useless
また明日[mataashita] see you tomorrow
意識不明[ishikifumei] unconscious

印鑑証明[inkanshoumei] certification of official registration of a seal
飲み明かす[nomiakasu] to drink the night away
解明[kaimei] clarification
明ける[akeru] to open (a door, etc.)
明け放す[akehanasu] to open wide (doors, windows, etc.)

アーク灯[aakutou] arc light
灯影[hokage] firelight
懐中電灯[kaichuudentou] electric torch
外灯[gaitou] outside light
街灯[gaitou] street light

幻灯[gentou] slide projector
行灯[andon] fixed paper-enclosed lantern
信号灯[shingoutou] signal light
石灯籠[ishitourou] stone lantern
船灯[sentou] ship's lamp