To agree (in action or opinion); to have a common opinion; to coincide; to correspond.
To converge.
To meet in the same point; to combine or conjoin; to contribute or help towards a common object or effect.
To intervene in a dispute, or in a conversation.
To interrupt a conversation by introducing a different subject or making a comment.
To insert something (or oneself) between other things.
To be inserted between parts or things; to come between.
To offer (one's help or services).