Note: I do not know the definition of
"Spanishoilarroba" within the phrase "Spanish
oil arroba".  The following sound alike:
Spanish libra, Spanish quintal, shipping ton,
Spanish peseta.  The following partially
match: span, spat, Spain, specific fuel
consumption volume basis, specific
conductance, spindle, specific heat capacity
mole basis, specific volume mole basis,
sphere, specific charge, specific energy,
specific fuel consumption mass basis,
specific heat capacity, specific entropy,
specific heat capacity mass basis, specific
surface area, specific volume, specific
impact energy, spring, speed of light, speed.