expression, ichidan verb
take a shower
Common everyday expression for showering. The verb 浴びる means to pour or bathe in something, and シャワー is a loanword from English.
朝起きたらまずシャワーを浴びる。
When I wake up in the morning, the first thing I do is take a shower.
運動の後でシャワーを浴びたい。
I want to take a shower after exercising.
Combination of the loanword シャワー (from English 'shower') and the verb 浴びる (to bathe in, to pour over oneself).