arm and sleeve share a recorded sense, so the question is not what they mean but which one fits. arm means “a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb”. sleeve means “the part of a garment that is attached at the armhole and that provides a cloth covering for the arm”. arm is the more common of the two in everyday English.
/ˈɑɹm/
1.n.a human limb; technically the part of the superior limb between the shoulder and the elbow but commonly used to refer to the whole superior limb
2.n.any projection that is thought to resemble a human arm
“the arm of the record player”
3.n.any instrument or instrumentality used in fighting or hunting
“he was licensed to carry a weapon”
/ˈsliv/
| arm | sleeve | |
|---|---|---|
| Pronunciation | /ˈɑɹm/ | /ˈsliv/ |
| Said | ahrm | sleev |
| Syllables | 1 | 1 |
| Letters | 3 | 6 |
| Parts of speech | noun, verb | noun |
| Senses | 8 | 2 |
| How common | Core | Common |
| Synonyms | none recorded | arm |
Full entry for arm · Full entry for sleeve · More comparisons
1.n.the part of a garment that is attached at the armhole and that provides a cloth covering for the arm
2.n.small case into which an object fits