risk, brave, dare, face, defy, (diseases) attack, damage, desecrate, assume (a name)
冐 centers on stepping into danger or opposition: risking harm, braving a threat, or defying something. The extended senses of disease attacking, damage, desecration, and assuming a name all involve an active, often bold, encroachment.
冐 is a variant form of 冒. The top component ⺜ represents a cap or covering, and the lower part 月 (historically 目, eye) suggests looking out from under a covering, giving the idea of venturing or risking. The modern form with 月 is a simplification.
The top ⺜ looks like a cap or hood pulled over the eyes (月 as a simplified eye). Picture someone pulling a hood down and bravely stepping into danger, risking everything.
For ボウ, imagine a brave warrior tying a bow (ボウ) around their hood before daring to face the enemy: bow -> ボウ.