n.
Pronunciation: p ə - ' ri-m ə -t ə r
Function: noun
Etymology: Middle English perimetre, from Latin perimetros, from Greek, from peri- + metron measure ― more at MEASURE
Date: 15th century
1 a : the boundary of a closed plane figure b : the length of a perimeter
2 : a line or strip bounding or protecting an area
3 : outer limits ― often used in plural
4 : the part of a basketball court outside the three-point line