Denshi Jisho — Online Japanese dictionary

とは indicates word or phrase being defined
Common word, Particle 
徒輩 とはい set; company; companions; fellows
Noun 
登坂 とはん climbing a slope (hill); ascending a hill
Noun, Suru verb 
登坂車線 とはんしゃせん (climbing) lane for slower traffic
Noun 
とは言え とはいえ though; although; be that as it may; nonetheless
Conjunction, Usually written using kana alone 
とは別に とはべつに in addition to; apart from
Adverb 
とは限らない とはかぎらない not necessarily so; is not always true
Expression 
とは言うものの とはいうものの having said that; be that as it may
Common word, Expression, Usually written using kana alone 

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