n. & v.
n. 1 a person invited to visit another's house or have a meal etc. at the expense of the inviter. 2 a person lodging at a hotel, boarding-house, etc. 3 a an outside performer invited to take part with a regular body of performers. b a person who takes part by invitation in a radio or television programme (often attrib.: guest artist). 4 (attrib.) a serving or set aside for guests (guest-room; guest-night). b acting as a guest (guest speaker). 5 an organism living in close association with another.
v.intr. be a guest on a radio or television show or in a theatrical performance etc. be my guest colloq. make what use you wish of the available facilities. guest-house a private house offering paid accommodation. guest of honour the most important guest at an occasion. guestship n.
[ ME f. ON gestr f. Gmc ]