quword
趣词
Word Origins Dictionary
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
ground floor (n.)
also
ground-floor
, c. 1600, from
ground
(n.) +
floor
(n.); figurative use is from 1864.