itumba (i-  3  class 3
singular: i-,in-
plural: i-,in-
  
rain season (about February to May)
 itumba : Prefixless Present 2.class plural of:
gutumba (-tumvye)   v    to swell
umutūmba (imi-)     2  class 2
singular: umu-
plural: imi-
  
1. stem, trunk of tree, 2. torso of person or animal
banana    igitōke, igitōki, umuneke
(plantation) urutoke
(one or one hand of) umuhānyu
(ripe) umuhwi, umuneke
(kinds of) ikinyamunyu, igisamunyu
(beer banana) igipaca
(lady-finger) akamaramasenge
(red banana) igisukari
(bark of tree) igihubahuba
(beer) urwārwa
(sweet drink) umutobe
(leaf, green) umutōto
(leaf) ikirere
(leaf, dry) ihuba
(leaves, dry) igihūnda, ibihūndahūnda
(center of leaf) ikigongo-gongo
(leaves, knife for cutting) urugombōzo
(young shoot) umutsīnda
(trunk after stalk is cut) igitumbatumba
(to cut leaves) kugombōra
(to cut from stalk) guhānyura
(to cut stalk) gutūmbūra
(to remove dry leaves) gutūtūra
(to squeeze juice from) kugana, kuvuguta
En-En dictionary 
rain    imvura
(light, fine) urunyanyāga
(main rain season) itumba
(season of early rains) agatāsi
(very heavy) isegenya
(very heavy, sweeps away crops on hillside) inkukūra
(wind and rain, storm) inkūbi
(path of water in heavy rain) umuvo
(to ~) kugwa
(with imvura, i.e. imvura iragwa)
(to begin to ~ after dry season) gutāsura
(to cause to, sorcerer) kuvuba
(early in morning or for a long time) kuvōvōta
(heavily) guhonoka
(a long time without stopping) kujobanya
(on) kuvubira
(softly) kunyanyāga
(to threaten to) gukuba
(to fall continuously) gushāna
(to fall heavily) kuzibiranya
(to go for shelter in) kwūgama
(to be soaked by downpour) kujōbeka
En-En dictionary 
rains    (to be late, not fall) gutara
(main rain season) itumba
(season of early) agatāsi
En-En dictionary 
trunk    (of tree, person, animal) umutūmba
(of banana tree after stalk is cut) igitumbatumba
En-En dictionary 
rainy season   itumba
(early, Sept.-Oct.) agatāsi
(principal, Feb.-May) urushāna
En-En dictionary