Search:
Search Mode
Natural Language
Find single term
Find any term
Find exact phrase
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
o'clock
c.1720, abbreviation of
of the clock
(1640s), from Middle English
of the clokke
(late 14c.). Attested from 1904 in reference to direction (by shooters, fighter pilots, etc.).
