v.
intr. To be absorbed in one's thoughts; engage in meditation. v.
tr. To consider or say thoughtfully: mused that it might take longer to drive than walk. n. A state of meditation.
[Middle English musen, from Old French muser (possibly from mus, snout, from Medieval Latin mūsum) and or of Germanic origin.] mus'er n.
mus·ing (myōō'zĭng) adj. Deep in thought; contemplative. n.
Contemplation; meditation.
A product of contemplation; a thought. "an elegant tapestry of quotations, musings, aphorisms, and autobiographical reflections"(James Atlas).
"to be absorbed in thought," 1340, from O.Fr. muser (12c.) "to ponder, loiter, waste time," lit. "to stand with one's nose in the air" (or, possibly, "to sniff about" like a dog who has lost the scent), from muse "muzzle," from Gallo-Romance *musa "snout," of unknown origin. Probably influenced in sense by Muse.