2 Old HSK word(s): ☊哨兵 ** C ☊哨 ** D
吹口哨* * 放哨* * 口哨* * 前哨* *

Definitions from Unihan Copyright © 1991-2015 Unicode® Inc. All rights reserved.

前 in front, forward / preceding
哨 whistle, blow whistle / chirp

Hsk Characters: 哨 *
HSK -Characters and beyond:
GbBig5EngRadMegaTripleMultilingual
哨 54E8 + 哨 + + whistle, blow whistle / chirp 口 肖 Mouth 肖 (ÄHNELN) shao4 +

Korean:

哨 + 哨 망볼초
1 NHSK word(s): 哨* 6 shao4a whistle/ sentry
KOREAN6000 word(s):
0 KOREAN 2500 New HSK words):
0 KOREAN Sentence(s):