adj. & v.
adj. 1 upright, vertical. 2 (of the penis, clitoris, or nipples) enlarged and rigid, esp. in sexual excitement. 3 (of hair) bristling, standing up from the skin.
v.tr. 1 raise; set upright. 2 build. 3 establish (erect a theory). erectable adj. erectly adv. erectness n. erector n.
[ ME f. L erigere erect- set up (as E-, regere direct) ]