[leg-room, -roo m]
space sufficient for keeping one's legs in a comfortable position, as in an automobile.
Origin of legroom
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
room to move one's legs comfortably, as in a car
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012