Denshi Jisho — Online Japanese dictionary

ろう old age; age; old people; the old; the aged
Noun 
おい old age; old person; the old; the aged
Common word, Noun 
おじ old man
Out-dated or obsolete kana, Noun 
ふけ aging; ageing
Noun 
海鼠 ほや sea squirt; ascidian
Noun, Usually written using kana alone 
オイル oil; engine oil; kerosene
Common word, Noun 
しにせ 1: old shop; shop of long standing;
2: (No-adjective) well-established; first of the kind; veteran
Common word, Noun 
ろうか ageing; aging; senile deterioration
Common word, Noun, Suru verb, No-adjective 
ろうご old age
Common word, Noun 
ろうし Lao-tse; Lao-tzu
Common word, Noun 
ろうば old woman
Common word, Noun 
ろうふ old woman
Common word, Noun 
おやじ one's father; old man; one's boss
Gikun (meaning) reading, Noun 
ろうぎ aged geisha
Noun 
ろうく one's old bones; aged body
Noun 
ろうし old priest; sage; (Zen) teacher
Noun 
ろうし die of old age
Noun, Suru verb 
ろうひ old housemaid; old female servant
Noun 
ろうふ old father
Noun 
ろうほ 1: old shop; shop of long standing;
2: (No-adjective) well-established; first of the kind; veteran
Noun 
ろうぼ old mother; aged mother
Noun 
ろうや one's father; old man; one's boss
Noun 
いる おいる to age; to grow old
Common word, Ichidan verb, Intransitive verb 
ける ふける to age; to grow old
Common word, Ichidan verb, Intransitive verb 
い木 おいき old tree
Noun 
ろうがん presbyopia; age-related longsightedness; farsightedness
Common word, Noun, No-adjective 

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