cam

convex on both sides (of lens); biconvex

to protrude; to stick out

convexity

convexity

convex on both sides (of lens); biconvex

concave or convex; bumps and holes; uneven (surface); rugged

protruding nipples or bulging penis (contours of intimate body parts visible through clothing)

see 綠豆椪|绿豆椪[lu:4 dou4 peng4]

scoliosis