Not on vacation, but at home having booze-up

• Meeting, as Congress
• Meeting now

Wiktionary Word definitions in Wiktionary
n. 1 The act of sitting, as in a tub or bath. 2 That in which one sits, as a bathing tub.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Insession \In*ses"sion\, n. [L. insessio, fr. insidere, insessum, to sit in. See Insidious .] The act of sitting, as in a tub or bath. ``Used by way of fomentation, insession, or bath.'' [R.] --Holland. That in which one sits, as a bathing tub. ...