Base

bajo

(low)

rastrero

(immoral)

basamento

(lowermost part of a column)

base

(something from which other things extend)

base

(permanent structure for housing military)

base

(headquarters)

base

(chemical compound that will neutralize an acid)

base

(baseball: one of the three places that a runner can stand in safety)

base

(math: number raised to the power of an exponent)

campaña

(heraldic charge: lowest third of a shield or field)

orlo

(something from which other things extend)

plinto

(something from which other things extend)

sede

(headquarters)

basar

(have as its foundation or starting point)