■ adjective rigidly upright or straight.
↘(of the penis, clitoris, or nipples) enlarged and rigid, especially in sexual excitement.
■ verb construct (a building, wall, etc.).
↘create or establish (a theory or system).
Derivatives
~able adjective
~ly adverb
~ness noun
~or noun
Origin
ME: from L. ~- , erigere 'set up'.