Denshi Jisho — Online Japanese dictionary

谷間 たにま 1: valley; ravine; chasm; dell;
2: cleavage
Common word, Noun 
谷間 たにあい 1: valley; ravine; chasm; dell;
2: cleavage
Noun 

You can also

Look up kanji details for 谷間.

Try a Yahoo Jisho search for 谷間 .
Try a Goo Jisho search for 谷間 .
Try a Google search for 谷間 .