bring into use or operation for first time.

To form a crack in something.

Belonging to the world of physical things. matter.

information and skills acquired through experience and education.

capable of cutting. A part of a plant cut off to grow new plants from. To use a knife/scissors to divide/open the surface.

burrowing, gregarious, plant-eating mammal. Types of small animals with long ears and four legs. hunt rabbits.

large natural elevation of earth's surface rising abruptly from surrounding level.

At the usual time each day, week, or month.

Feeling troubled or concerned. To cause concern or trouble over something.

expressing dissatisfaction. expression of dissatisfaction. To say something is wrong and should be changed.

body's relative mass or quantity of matter contained by it, giving rise to downward force. Metal object to measure how heavy something is. hold something down by placing heavy object on top of it.

used for emphasis with following adjective functioning as adverb. thing that is unspecified or unknown.

smallest or lowest. Smallest degree or level that is acceptable.

in space separating things. Among two or more people who share something.

for that reason.