Denshi Jisho — Online Japanese dictionary

小 お 1: small; narrow;
2: familiar prefix;
3: slightly; a bit
Prefix 
小 こ 1: small; little; slight;
2: slightly less than; just about;
3: somewhat; somehow;
4: minor (sometimes derogatory); petty
Prefix 
小 ささ small; little
Prefix 
小 さざ small; little
Prefix 
小屋 こや hut; cabin; shed; (animal) pen
Common word, Noun 
小火 ぼや small fire
Common word, Gikun (meaning) reading, Noun 
小父 おじ (used with suffix -san or -sama) endearing term for unrelated older man; (with suffix -san) term used by a child to address unrelated adult male
Noun 
小田 おだ rice field (usu. small)
Noun, Archaism 
小野 おの plain; field
Noun, Archaism 
小母 おば (used with suffix -san or -sama) endearing term for unrelated older woman; (with suffix -san) term used by a child to address unrelated adult female
Noun, Usually written using kana alone 
小手 こて forearm
Noun 
小手 こて gauntlet (used in Kendo); bracer; fencing glove
Noun 
小間 こま small room
Noun, Obscure term 
小竹 ささ bamboo grass
Noun 
小夜 さよ evening
Noun 
小蘗 めぎ Japanese barberry (Berberis thunbergii)
Noun, Usually written using kana alone 
小 ぐゎー small; little; dear (figurative sense)
Suffix, Ryukyu dialect 
小 しょう 1: smallness; small item;
2: short month (i.e. having fewer than 31 days);
3: (Abbreviation) elementary school;
4: younger or inferior (of two items or people with the same name);
5: (Archaism) unit of field area (approx. 400 sq m)
Noun, Noun prefix 
小豆 あずき adzuki beans
Common word, Gikun (meaning) reading, Noun 
小川 おがわ streamlet; brook
Common word, Noun 
小石 こいし pebble
Common word, Noun 
小牛 こうし calf
Common word, Noun, No-adjective 
小売 こうり retail
Common word, Noun, Suru verb 
小枝 こえだ twig; spray
Common word, Noun, No-adjective 
小型 こがた small size; tiny
Common word, Na-adjective, Noun, No-adjective 
小柄 こがら 1: small build; small stature; petite;
2: small pattern
Common word, Na-adjective, Noun, No-adjective 

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