swarmer noun².M-L18.
[German Schwärmer or Dutch zwermer, from German schwärmen, Dutch zwermen rove, stray.]
A firework, esp. a small rocket or serpent.

[TahlilGaran] English Dictionary ▲

swarmer noun¹. ['swɔ:mǝ] M19.
[from SWARM verb¹ + -ER¹.]
1. Any of a number that swarm; one of a swarm (as of insects); spec. (Biology) = swarm cell s.v. SWARM noun; (Bacteriology) = swarmer cell below. M19.

2. A beehive adapted for swarming, or from which a swarm is sent out. M19.

Comb.:
swarmer cell Bacteriology a flagellated motile cell produced by certain species of stalked bacteria and slime moulds.

[TahlilGaran] English Dictionary ▲