to circle / to go back / to turn around / to answer / to return / to revolve / Hui ethnic group (Chinese Muslims) / time / classifier for acts of a play / section or chapter (of a classic book)

= + : Helga Horse (hu-) smuggled herself into the Eiffel Tower's kitchen (-ei2). She covered herself in an enclosure (囗) full of mandarins (口). Unfortunately, she missed one little detail: The box full of mandarins is to be shipped back (回) to China soon.
to curve / to return / to revolve
variant of 迴|回[hui2]

回 character breakdown

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

Mnemonic symbol: 口 shall be represented by a mandarin. Karl Marx (k-) is enjoying a mandarin in the outhouse's living room (ou3).
enclosure

Mnemonic symbol: a plastic enclosure. Willy Walrus (w) is keeping frozen fish in an enclosure (囗) in the Eiffel Tower's kitchen (ei2).

Characters with 回 as component

variant of 迴|回[hui2]
old variant of 蛔[hui2]
old variant of 蛔[hui2]
roundworm / Ascaris lumbricoides
old variant of 蛔[hui2]
variant of 蛔[hui2]
irresolute / to move back and forth
disordered / indistinct doubtful / blurred
variant of 面[mian4]

Words with 回

to return to / to come (or go) back
to shun / to avoid (sb) / to skirt / to evade (an issue) / to step back / to withdraw / to recuse (a judge etc)
variant of 迴避|回避[hui2 bi4]
to reply / to write back / letter written in reply / CL:封[feng1]
to turn around / to look back / to recollect
to turn around; to look back / (fig.) to recall the past
to return a compliment / to give sth in return
last time / the previous time
return of spring
magical hands bring the dying back to life (idiom); miracle cure / brilliant doctor
(idiom) (of a doctor) to effect a miracle cure

Sentences with 回

dà
wáng
huí
lái
le