send·off 
(sĕndôf′, -ŏf′)
(sĕndôf′, -ŏf′)n.
1. A demonstration of affection and good wishes for the beginning of a new undertaking.
2. A farewell: gave our guests a hearty sendoff at the airport.
- on the heels of
- on the hoof
- on the horns of a dilemma
- on the house
- on the increase
- on the inside
- on the job
- on-the-job
- on the level
- on the line
- on the loose
- on the make
- on the march
- on the market
- on the mend
- on the money
- on the move
- on the nose
- on the off chance
- on the onehand
- on the order of
- on the other hand
- on the outs
- on the part of
- on the prowl