1) Musing 
• (p. pr. & vb. n.) of Ruminate
ruminate, ruminating 1. To think carefully, and at length, about something. 2. To turn a matter (subject) over and over in the mind. 3. To partially regurgitate partially digested food and to chew it again; referring to ruminants (various cud-chewing hoofed mammals having a stomach divided into four; or occasionally three, compartments; such as, ...