(informal) An iconic bisexual celebrity or fictional character, or a celebrity or fictional character (including if not bisexual) who is much admired by (and iconic) to bisexual people.

plural of bicone

(geometry) The three-dimensional shape swept by revolving an isosceles triangle around its edge of unequal length, or by joining two identical right circular cones, base to base.

In a biconical manner.

consisting of two cones placed together apex to apex

Having the form of two cones

plural of bicon

plural of biconditional

(logic) An "if and only if" conditional wherein the truth of each term depends on the truth of the other

Having two conditions