Denshi Jisho — Online Japanese dictionary

机 つき desk
Out-dated or obsolete kana, Noun 
机下 きか 1: word of respect added to the addressee's name on a letter;
2: under the desk
Noun 
机 つくえ desk
Common word, Noun 
机辺 きへん near a desk
Noun 
机上 きじょう 1: on the desk;
2: theoretical; academic
Common word, Noun, No-adjective 
机の足 つくえのあし legs of a table
Noun 
机上検査 きじょうけんさ desk checking
Noun, Computer terminology 
机に向かう つくえにむかう to sit at a desk (to study); to set to work on revision, homework, etc.
Expression, Godan verb with u ending 
机上空論 きじょうくうろん impractical desktop theory (proposition); unworkable idea; an idea that isn't worth the paper it's written on
Noun 
机上チェック きじょうチェック desk checking
Noun, Computer terminology 
机上の空論 きじょうのくうろん academic gossip; empty theory
Expression, Noun 

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