DCHP-1 Online
stopper Lab., Obs. 
n. a type of net-trap placed permanently across narrow channels, for catching seals.
- 1771 (1792) The boats made only one trip each to-day; one of them to the shoal-nets; the other to the stoppers, and brought in sixty-three seals.
- 1861 There is another method of catching the seal by what is called the stopper-net.
- 1771 (1792) The boats made only one trip each to-day; one of them to the shoal-nets; the other to the stoppers, and brought in sixty-three seals.