skylab noun2 •An outer space laboratory.Two aspects of altered immunity must be dealt with before man can exist for extended periods in space capsules, skylabs, or sealabs. — 1973 •(Philippines) A motorcycle taxi with extension seats on the sides, configured by placing a wooden beam across the pillion.Parked by its ancestor the ox cart, skylabs are the only public transit in this Sakhon Nakhon village. — 2005 formsskylabs