1low·er 
/ˈlowɚ/ adjective
/ˈlowɚ/ adjective 1 always used before a noun a : located below another or others of the same kind
▪ her lower jaw/lip ▪ his lower extremities/limbs [=his legs and feet] ▪ the ship's upper and lower decks
b : located toward the bottom part of something
▪ The message appeared on the lower portion of the screen. ▪ She felt a pain in her lower leg/back. [=the lower part of her leg/back] ▪ the mountain's upper and lower slopes
c : not high above the ground
▪ The forecast is for strong winds at lower elevations. 2 : located toward the south
▪ in the lower and higher latitudes ▪ the lower and upper peninsulas 3 : below another or others in position, rank, or order
▪ higher and lower courts 4 : less advanced or developed
▪ higher and lower animals
▪ her lower jaw/lip ▪ his lower extremities/limbs [=his legs and feet] ▪ the ship's upper and lower decks
b : located toward the bottom part of something
▪ The message appeared on the lower portion of the screen. ▪ She felt a pain in her lower leg/back. [=the lower part of her leg/back] ▪ the mountain's upper and lower slopes
c : not high above the ground
▪ The forecast is for strong winds at lower elevations.
▪ in the lower and higher latitudes ▪ the lower and upper peninsulas
▪ higher and lower courts
▪ higher and lower animals
