In plural. Thoughts; musings, trains of thought.

gen. The action, or an act, of meditating; continuous thought or musing upon one subject or series of subjects; (a period of) serious and sustained…

As a count noun: an act or instance of deep or thoughtful reflection. Also (in plural): thoughts or ideas which occupy a person's mind.

As a count noun: a spell of thoughtfulness or reflection; a meditation; (also) a written reflection, thought, idea, etc. Usually in plural.

A moment or period of being lost, esp. pleasantly, in one's thoughts; a daydream. Frequently with possessive adjective.

An act or period of musing; a spell of thoughtfulness or reflection. Also (rare) as a mass noun: profound meditation or abstraction; musing.

As a count noun: a meditation, thought, or reflection. Frequently in plural.

(originally) any period of contemplation or reflection engaged in while walking; (later, chiefly in Zen Buddhism) meditation practised while…

An act of thinking about or considering something. Frequently in to have another reckon coming (and variants). Cf. think, n.