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
backfill (n.)
1901 (as
backfilling
), from
back
(adj.) +
fill
(n.). The verb was in use by 1930.