---

All answers having "Caboose" as clue:

3 Character Answers:

---

ASS

CAN

CAR

END



4 Character Answers:

---

ARSE

REAR

TAIL

TUSH



5 Character Answers:

---

ENDER



6 Character Answers:

---

HEINIE



7 Character Answers:

---

BACKEND

LASTCAR

RAILCAR

REAREND

TAILEND