| Definition/Meaning | Word/Phrase |
| nuisance that can remedied (suppressed or extinguished or rendered harmless) |
abatable nuisance
|
| any of a small family of lizards widely distributed in warm areas; all are harmless and useful as destroyers of e.g. slugs and insects |
anguid lizard
|
| small venomous but harmless snake marked with black-and-white on red |
Australian coral snake
,
Rhynchoelaps australis
|
| microorganisms, some harmless and some disease-causing |
bacterium
|
| large harmless plankton-eating northern shark; often swims slowly or floats at the sea surface |
basking shark
,
Cetorhinus maximus
|
| pollution that is rendered harmless by natural processes and so causes no permanent harm |
biodegradable pollution
|
| large harmless shiny black North American snake |
black rat snake
,
blacksnake
,
Elaphe obsoleta
,
mountain blacksnake
,
pilot blacksnake
|
| small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries |
bonnethead
,
bonnet shark
,
shovelhead
,
Sphyrna tiburo
|
| any of several large harmless rodent-eating North American burrowing snakes |
bull-snake
,
bull snake
|
| automobile exhaust part that transforms harmful gases into harmless byproducts |
catalytic converter
|
| mostly harmless temperate-to-tropical terrestrial or arboreal or aquatic snakes |
colubrid
,
colubrid snake
|
| large harmless snake of southeastern United States; often on farms |
corn snake
,
Elaphe guttata
,
red rat snake
|
| extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned |
devilfish
,
manta
,
manta ray
|
| ice, harmless floating |
drift ice
|
| powerful free-swimming tropical ray noted for `soaring' by flapping winglike fins; usually harmless but has venomous tissue near base of the tail as in stingrays |
eagle ray
|
| spherical or elliptical usually aerobic eubacteria that produce yellow or orange or red pigment; includes toxin-producing forms as well as harmless commensals and saprophytes |
family Micrococcaceae
,
Micrococcaceae
|
| large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years |
fish eagle
,
fish hawk
,
osprey
,
Pandion haliaetus
,
sea eagle
|
| any of various small chiefly tropical and usually nocturnal insectivorous terrestrial lizards typically with immovable eyelids; completely harmless |
gecko
|
| harmless European snake with a bright yellow collar; common in England |
grass snake
,
Natrix natrix
,
ringed snake
,
ring snake
|
| harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed |
hognose snake
,
puff adder
,
sand viper
|