(~s, ~ing, ~d)
1.
Your ~s are the five movable parts at the end of each foot.
N-COUNT: usu pl
2.
If you dip your ~s into something or dip your ~s into the waters of something, you start doing that thing slowly and carefully, because you are not sure whether it will be successful or whether you will like it.
This may encourage gold traders to dip their ~s back into the markets...
PHRASE: V inflects, usu PHR n
3.
If you say that someone or something keeps you on your ~s, you mean that they cause you to remain alert and ready for anything that might happen.
His fiery campaign rhetoric has kept opposition parties on their ~s for months.
PHRASE: V inflects
4.
If you ~ the line, you behave in the way that people in authority expect you to.
...attempts to persuade the rebel members to ~ the line...
PHRASE: V inflects
5.
If you tread on someone’s ~s, you offend them by criticizing the way that they do something or by interfering in their affairs. (INFORMAL)
I must be careful not to tread on their ~s. My job is to challenge, but not threaten them.
PHRASE: V inflects