Denshi Jisho — Online Japanese dictionary

たが hoop; binding (e.g. of a barrel)
Noun 
を締める たがをしめる to pull oneself together; to get one's act together; to brace oneself
Expression, Ichidan verb 
を嵌める たがをはめる to hoop; to put a hoop on; to bind a barrel with hoops
Expression, Ichidan verb 

You can also

Look up kanji details for 箍.

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