To notice or view, especially carefully or with attention to detail.
To take note of and celebrate (a holiday or similar occurrence); to follow (a type of time or calendar reckoning).
To comment on something; to make an observation.
To follow or obey the custom, practice, or rules (especially of a religion).
To look at out of the corner of one's eye, particularly with animosity, or in a judgmental or suspicious manner.
A sidelong look, particularly of animosity, judgment, or suspicion.