Ambiguous wording in contract

A warehoue storage contract stating $x per unit for bimonthly period.
I interpreted "bimonthly" as every 2 months (As a matte of fact,I did not know the second meaning until too late.), while the warehouse said it meant very half month. How an ambiguous word like this to be comprehended leagally?

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• 回複：Ambiguous wording in contract -單身老貓- ♂ (3851 bytes) () 11/21/2009 postreply 16:30:58

• Thansk! The background is a long story -zclearwater- ♀ (938 bytes) () 11/22/2009 postreply 11:25:17