bear, carry
舁 centers on lifting and supporting a load together: bearing or carrying something, often with the implication of shared effort.
舁 combines 臼 (a mortar or two hands) and 廾 (two hands), suggesting multiple hands lifting together. The exact historical development is uncertain, but the component arrangement consistently points to shared carrying.
Two pairs of hands (臼 and 廾) work together to lift a heavy load: 舁 means to bear or carry jointly.
For ヨ, imagine a group of workers saying 'Yo!' as they lift together: 'Yo!' -> ヨ, and they bear the weight in unison.