n.
Function: noun
Etymology: Middle English, from Anglo-French bounde, bodne, from Medieval Latin bodina
Date: 13th century
1 a : a limiting line : BOUNDARY ― usually used in plural b : something that limits or restrains <beyond the bound s of decency>
2 usually plural a : BORDERLAND b : the land within certain bounds
3 : a number greater than or equal to every number in a set (as the range of a function) also : a number less than or equal to every number in a set