This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Having two teeth or toothlike parts.

adj. Having tooth-like projections that are themselves dentate.

adj. Of a ligand, forming two separate chemical bonds to a coordinating metal ion.

adj. Having two teeth or two toothlike processes; two-toothed.

Having two teeth or processes like teeth; two-toothed. Other forms are bidentated, bidental, bidential, and (rarely) bidented.

In botany, doubly dentate, the principal teeth, as of a dentate leaf, being less deeply dentate.

adj. having toothlike projections that are themselves toothed

"The small cephalic lobe bore four eyes and five tentacles; each body-segment had on each side at the margin a tuft of simple setae directed obliquely upwards, and at some distance from this, upon the ventral surface, a group of thicker setae with a strongly uncinate bidentate apex."

rough   

two-toothed