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in a safe way:
We all arrived safely.
Drive safely! (= Do not take any risks!)
Are the kids safely fastened into their car seats?
I think we can safely (= with no risk of being wrong) say they won't find us now.
an area of approximately square-shaped land in a city or a town, often including the buildings that surround it:
Are they still living at 6 Eaton Square?
A band were playing in the town square.
A1
This is the most advanced type of engine available.
A2
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the force that attracts objects towards one another, especially the force that makes things fall to the ground:
the laws of gravity
the work of keeping a house clean and tidy:
I hate doing housework.
one of many tissues in the body that can tighten and relax to produce movement:
facial muscles
bulging/rippling (= large and clear to see) muscles
He flexed his muscles (= tightened them to make them look large and strong) so that everyone could admire them.
These exercises build muscle and increase stamina.
a muscle spasm (= a sudden uncontrollable tightening movement)
having or appearing to have no weight:
There is a lot of interest in carrying out experiments in the weightless conditions which are experienced aboard space stations.
a large, thick bag for sleeping in, especially when you are sleeping outside, for example in a tent