ぽっぽ
1
puffing (smoke or steam);puff-puff (of a steam locomotive);chug-chug
2
steaming
3
(one's body) feeling hot
4
coo-coo (of a pigeon)
5
choo-choo (train)
See also:
汽車ポッポ (きしゃぽっぽ)
6
pigeon;dove
See also:
鳩ぽっぽ (はとぽっぽ)