noun Date: 1700 either of two watches of two hours on shipboard that extend from 4 to 6 and 6 to 8 p.m., any of various night shifts
DOGWATCH
Meaning of DOGWATCH in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012